So, I found out why the thread was removed. Someone complained.
They said
"I would like you to check out a new thread. It is under 'mis-audio' and the title is "Why YouTube can seem a ridiculous venue for reviews". The OP (hilde45) has decided to bash another member by creating a thread to ridicule and bad mouth the OP of one of the most popular threads on Agon....'jays_audio_lab'. Jay started a very popular YouTube channel in addition to his Agon thread where he reviews audio gear. Is it OK to start a thread on Agon just to bash someone? I mean this OP hilde45 has gone out of his / her way to put down and demean Jay. If he doesn't agree with Jay then don't follow him but to intentionally create a way to put him down doesn't seem like it has a place on Agon."
All I would say about this is that I was not bashing a member, but rather raising a critique of this channel's tendency to be hyperbolic -- and I gave the evidence. This channel is a business but also a site of journalistic opinion. For some reason it requires special, extra protection.
My post was raising for consideration the proliferation of hyperbole in the video opinion realm. Anyone who read that knows that.
Why it's possible for a member on our site to call this "bashing" is beyond me, but I guess I didn't count on feelings and sensibilities being wounded so easily.
I guess I found out the reason.