Except that in order to be more successful in the field, you do need to attend certain conferences, work with certain projects, and participate in certain communities, or you'll have a severe disadvantage compared to people who can. Which is one of many, many reasons why the tech industry as a whole has a severe diversity problem. (And even in my case, I don't particularly enjoy dealing with awful people either.) So I'm happy that behaviors like that are becoming a lot less accepted, so that FOSS as a whole is more welcoming than it used to be, and it's a lot easier to write off the much smaller subset of projects with awful communities around them. Still a long way to go, though.

Nothing stops people from acting that way. It's not illegal, nor should it be. But I'm looking forward to a world where when someone tries everyone else just looks at them funny and dismisses them immediately, so that people stop trying.

Which brings us full circle back to the original point: given a choice (and it is a choice) between which set of people to exclude from a community, I know which set I'd prefer. You seem to have a different preference, and you're welcome to it. I look forward to that point of view losing all credibility and respect in the industry as a whole, and an increasing number of people are working towards that goal. Have a nice day.