People are scared to.
Increased moderation in games definitely changed stuff a lot, people used to speak freely because online felt like the wild west where you could say anything without consequence but it hasn't been like that for a long time, now people are paranoid if they say anything out of line they will get banned so they just don't talk. Eventually all of this buckbreaking fucks with you mentally and you just give up.
Also probably because of an increase of social anxiety and a decrease in people's social skills... but I bet if we could return to the wild west internet again people would talk more.
Kind of fucked the only option a lot of us had to socialize is so cucked we don't even have that anymore.
This goes beyond just games, dead internet theory is real.