Those are great questions Searcher. I will not attempt to answer them. Most of them I cannot answer without quessing.
The scripture in John 8 says
31 So Jesus was saying to those Jews who had believed Him, “If you continue in My word, then you are truly disciples of Mine; 32 and you will know the truth, and the truth will make you free.” ....
36 “So if the Son makes you free, you will be free indeed. 37 “I know that you are Abraham’s descendants; yet you seek to kill Me, because my word has no place in you. 38 “I speak the things which I have seen with My Father; therefore you also do the things which you heard from your father.”
If you ask a loyal Jehovah's Witness those question they will use the Watchtower to answer them. So the truth is not in them but they trust the truth is in other imperfect men. "Therefore you also do the things which you heard from your father.” That still applies to them after all these years.