God’s servants on earth have always still shown human failings , eg. Peter’s succumbing To Jewish influence ( racism) and Paul’s “sharp burst of anger “ . However these were personal failings , not teaching errors. Whenever Holy Spirit guided them to write or speak, it was accurate and true.
I have no problem with the GB being normal men. I chuckled at AM3. buying a crate of whisky and Stephen Lett’s peculiarities and ill judged comments. I do see a problem when their teaching is seriously off and has to be corrected or quietly forgotten.
You know of course about the massive campaign 100 years ago to promote the teaching that “ Millions Now Living Will Never Die”. The then President had to admit later that “ I made an ass of myself” over that. Did Holy Spirit direct that campaign? Clearly not.
What I see in this Organisation is the hallmark of an company of men , human failings abound and no amount of their claims of being directed by God and Jesus, will convince me otherwise.