Regarding NixOS, I'm mostly afraid of them going on a user purge after their developer purge. You just never know who this group of people will come after next, especially after they started defining "Fascism" as "anyone asking for how they define Fascism".
And the jump of getting rid of people you hate who contribute to your project and you can do little harm to, to getting rid of people you hate who are of no use to you and you can do genuine damage to (e.g. by installing a tor exit node) is a step down if you think you could get away with it.
> Regarding NixOS, I'm mostly afraid of them going on a user purge after their developer purge
... Why? I don't know what developer purge you're talking about, but getting rid of people running a project almost never means suddenly they'll start to get rid of users, I'm not sure why that assumption is there. Not to mention that they couldn't even "purge users" if they wanted to, unless they make the download URLs private and start including some licensing schema which, come on, hardly is realistic to be worried about...
To provide some opinionated context for this unhinged rant:
The community developing nix had a falling out with a couple highly unsavory groups that basically consisted of the Palmer Lucky Slaughter Bot Co. and a couple guys who keep trying to monetize the project in extremely sleazy ways. This wasn't some sort of Stalinistic purge, it was people rejecting having their name attached to actual murder and sleazy profiteering.
And the jump of getting rid of people you hate who contribute to your project and you can do little harm to, to getting rid of people you hate who are of no use to you and you can do genuine damage to (e.g. by installing a tor exit node) is a step down if you think you could get away with it.