Island Man - I agree.
The dose-of-sanity comment is all I can muster anymore. If the paragraph happens to be encouraging normal ethical behavior or discouraging unethical behavior then i can comment.
If it's another we are right, the whole world is wrong, God is going to kill you if you are unfaithful, aren't the Governing Body amazing type paragraphs, then I can't do it. I have a visceral reaction to that BS propaganda now.
I have gone many watchtower studies without finding one comment I could stomach making. I am an elder btw.
To answer the OP - Is WT Commenting a True Believer Indicator? - Yes for those that are sincere. It is also a way to appear that you are a believer for those of us that are faking it for now.