I can confirm this shit is 100% true, especially with TF2 and VRchat. Back when I was a mid-late teenager (a couple years before COVID to give a general time frame. Yes, I joined KF after I turned 18 if you were wondering), this shit was happening already, albeit not to the extent it is now. I was pretty socially isolated due to some major events occurring in my life, so I was gaming practically all day. The games I played most were TF2, source games in general, and VRchat. You can see where this is going.
I started drinking around this time, and I found myself reciprocating the weird shit people said in these games. Suddenly, I was getting loads of attention (especially in VRchat). Over time, I found myself slowly spiraling down the rabbit hole, surrounding myself with weird sex pests who would try to engage with me, knowing damn well I was a teenager. But drunk me didn't really care or notice. What finally snapped me out of it is when I had some degenerate furfag on VRchat invite me to a private room to ask me to do weird sexual shit for him. I feel like that's when it clicked that, these aren't normal people who are just making crass jokes, but in fact disgusting pedophiles trying to solicit me and groom me into something. I also had a strong enough father figure that I stopped and thought about how ashamed my father would have been if I let some pedophile furry faggot take advantage of me on the fucking internet. Needless to say, I quit VRchat and stopped drinking for attention after that experience.
If it was as bad as it was back then, I shudder to think of how horrific and common this shit is now, especially with groups like 764 and the lot thrown into the mix.
Unfortunately, the majority of my trusted online buddies (gay, I know) had very similar circumstances to me at the time. Out of around 12 people I knew at the time, all but 2 have trooned out and became weird sex deviants as of today. It's infuriating that they got fucked with so bad, and that there's nothing I can do to convince them that they've been groomed. But that's just how it is, I guess.
I'm fucking blessed to have had such a strong influence from my father, because lord knows these child-grooming faggots would have dragged me down the gutter as well.
TLDR: I narrowly avoided getting groomed and exploited by VRchat and TF2 furfags when I was a teenager. My friends were not so lucky.