I'll agree with what you said in large part, but the thread count is probably off do to multipules of the same things being discussed. For instance there are 2 why should I be evil subtopics on the first page currently, another on page three if I remember correctly. So then there are a plithera of this isn't BG subtopics further throwing off the numbers.
perhaps if they simply went back to 5e straight up, purist style for their play testers as we're playtesting *enter massive brain fart* yeah well that which flew out the window.