[mytailorisrich]

An OSS project has de facto owners and an established group of contributors. If they want to "drive off" new users that's their prerogative.

In fact, a CoC is no more than them laying down the law explicitly on how they want people to behave in the project.

"If you are more annoying to work with than your contributions justify, you'll be ejected" is spot-on on how things work in general.

That might lead the project to fail or fork (beauty of OSS) but that's life.