minimus, in light of principles you espoused in your post does that mean you did not vote for Donald Trump as President, since he is known to lie numerous times and that multiple women accused him of sexual harassment, or did you vote for him anyway thinking he had some good policies and made some truthful statements?
The comments I made about Rutherford were because I wanted him to be presented accurately and for discussions about him to not be entirely one sided. Furthermore when I began reading his books, I was not convinced of any of the accusations about him being a bad person (whether a drunkard, an adulterer, or a crook, or a liar). I am still not convinced of the accusations, though they now seem more plausible to me. I will have do more reading about the matter. But it is hard for me to believe any of the current and former Government Body members are (or were) very bad people while serving on the GB (or as President of the WT), due to my personal experiences with the religion and due to the emphasis in the WT literature of very high strict moral standards. But even if some have or had major flaws while leading the WT organization, every person alive has flaws and I try to acknowledge the good in people (even Donald Trump, despite me strongly disliking him), while acknowledging that certain ones have obvious major moral flaws. For example, many of the early USA Presidents owned slaves, but that doesn't mean their good actions shouldn't be acknowledged. Perhaps you think they should be 'canceled' from the history books (or that their good actions should not be mentioned in the history books) and that their statues should be toppled over and/or removed. I guess you feel I should "disfellowship" Rutherford in the sense of thinking I should cease all fellowship with him (in the form of reading his literature). What specific things did I write about Rutherford that you think were acts of me justifying him?
My studying his books helps me to be more aware of the religion I was raised in from infancy and of the degree of accuracy of their current teachings and of the degree of integrity of the organization. A number of books alleged to have been written by Franz quote from Rutherford's literature and invite JW's to read the literature. Thus reading the literature helps me to see the degree of influence Rutherford's literature has on the current JW religion (and also the way the religion was while I was an active member of it). But it is also because I have invested much time into the religion and I want to get something good out of it (rather than discarding every part of it 'along with the bath water' - to use a metaphor), and thus I want see if they have some truths and good ideas I had not already learned about. I haven't just been reading Rutherford's books, I have also been reading Russell's and the books produced by the WT after Rutherford died. I have about all of the WT books (except I sold nearly all of the WT bound volumes I had, but the text of those are on CD-ROM) that have copyrights ranging from the year I was born through about the year I became an atheist.
As far as Satan goes, I have browsed some literature by the Church of Satan (see https://www.churchofsatan.com/nine-satanic-sins/ ) and The Satanic Temple (see https://en.wikipedia.org/wiki/The_Satanic_Temple ) to see if they were as people say, or if they might have some good teachings. To my surprise I noticed that most of their teachings are not bad and that many of their teachings sound humanistic instead. The latter group is actually a secular group in disguise. https://en.wikipedia.org/wiki/The_Satanic_Temple says "The group uses Satanic imagery to promote egalitarianism, social justice, and the separation of church and state, supporting their mission "to encourage benevolence and empathy among all people". ... The organization's participation in public affairs includes political actions as well as lobbying efforts,[11][12] with a focus on exposing Christian privilege when it interferes with personal religious freedom."
Regarding Satan himself, if you read the Bible carefully in regards to its alleged quotes of Satan, you will notice that nothing the Bible quotes Satan as saying is said to false according to the Bible. For example Genesis 3:22 has Jehovah God say that Satan was technically correct in what he told Eve (about the effect of eating the forbidden fruit), though it wasn't what Eve expected. Also according to the account Adam and Even would have obtained eternal life, had not God blocked their access to the tree life. The account even makes God the liar because God said Adam and Eve would die in the very day of their eating the forbidden fruit (if they eat it), but instead God let them live for hundreds of years before dying.
In the Gospel accounts of Satan tempting Jesus Satan accurately quoted scripture to Jesus (no false quotes at all, though Jesus said Satan was not applying the scriptures properly). Furthermore in an account Satan offered Jesus all of the kingdoms of the world if Jesus would perform and act of worship to him, and WT literature says that Satan could legitimately make that offer since according to the Bible all the kingdoms of the world do belong to Satan. In the accounts of demon possessed men everything the demons said out loud was truthful (according to the Bible), including one proclaiming that Jesus is the Son of God (see Luke 4:41). There was also the example of a woman having the power of prediction by means of a demon (or of an unclean spirit) and according to the account the predictions were accurate. The spirit of divination even said (according to the Bible) "These men are servants of the Most High God, who proclaim unto you the way of salvation." (ASV) According to the Bible what the spirit said was true. See Acts 16:16-18.