A lot of it may be because rational-thinking peoples were driven out or discouraged from using mainstream social media, along with slithery politically right types and outright sociopaths, so we're stuck here, in the corners. Why was thr left able to make this happen? Numbers. Which rational people always lacked. So while this vibe you're talking about is still present, I feel (the good one), there are now people who are eager to echo the notion, from the shadows or otherwise, but for all the wrong reasons.