I think some of the more niche games/genres tend to make its community more open and inclusive, since it's a bunch of people wanting more people to enjoy the things they do.

The moment you get competitive, shit goes downhill hard. From my anecdotal experience with World of Warcraft, a game that caters to both tryhards and casuals, the latter are much more likely to hang around and help you out, or ask for your help, while the former will actively try to make the game worse for everyone, especially those of the opposing faction, ganking low level players that cannot fight back "for the lulz".

Also, anyone that has ever played in a LAN like setting, with your buddies literally within punching distance, knows that everyone behaves better and are less likely to go full apeshit

The scientists then looked specifically at players of shooter games, a genre often associated with military themes and violence. They found that shooter game players were also more likely to hold inclusive values regarding gender roles and equality compared to the general public. Their views on social tolerance were not significantly different from the average American.

Across every model tested, the authors found no evidence that playing video games broadly corresponds to an increase in exclusionary values. “The average person should take away from our findings that video game players are not some monolithic community,” Pauley told PsyPost. “While exclusionary and vocal segments of online gaming communities certainly exist, and we certainly do not want to downplay that, our findings suggest that on average, video game players hold slightly more inclusive values than the general population.”

So, the same problem that has plagued the internet since its inception: the loud idiots are too fucking loud