Not the drama itself should influence your judgment, but how they will deal with it.
Whenever people work together on something, there will be some drama, but if they are dealing with it, then that should be fine.
Nix and NixOS are big enough, that even if it fails, there are enough other people that will continue it, maybe under a different name.
Even it that causes a hard fork, which I currently think is unlikely, there are may examples where that worked and resolved itself over time, without too much of burden on the users, meaning there are clear migration processes available: owncloud/nextcloud, Gogs/Gitea/Forgejo, redis/valkey, ....