This is not something I've ever noticed but I just get a different overall vibe
It's hard to know whether it's legit because it could just be about the times of day that you post or the period that you're looking at, quite often I try not to look at those threads at all
I got stuck in freeze mode a bit last week because of having having some major stress, you know when something is really stressful and you can't do anything constructive? So I ended up engaging on some of those when I normally don't.
I really hope things are changing and it's not just what I've seen
What is super annoying is posters assuming you can tell when they're being sarcastic. Sometimes it is clear from tone. But if I don't know a person, and clearly I don't because we're on the Internet here, how am I supposed to know?