That's a very low effort way of underplaying the effect of these communities on the broader FOSS communities. There is a good reason why most FOSS developers/maintainers prefer to keep their personal and unrelated politics away from their project communities. For one, unchecked bigotry in isolated communities can turn bad for the general public - for example, 4chan, kiwifarms, etc. I have heard from more than one source that community engages in hate speech and brigading against people outside the communtiy - one example is visible in this video itself. This is why laws specifying limitation to free speech exists.

Now, even if you neglect the brigading, there is still the problem of support and contribution. Hyprland is a widely used project. Many end users and developers are going to stumble into the discord server either seeking support or with intent to contribute. If they belong to any minority group, they might inadvertently expose themselves to bigotry, bullying and harassment. Now you may be compelled to label this as hyperbole and fearmongering. But this is well known, highly underplayed problem in FOSS communities with numerous examples. There are so many cases where women stopped FOSS contributions because they felt insulted and harassed. This problem is why CoCs exist in the first place.

Nobody can force others to follow CoCs. But as Brodie says, it has become very important for end users to evaluate the projects they use - to see if it is a community they want to ever interact with. Similarly, distros need to decide if they want to expose their users to such a community.