If you only need a bare minimum, and don’t plan to heavily use CI/CD, container/packages registries, integrations with other tools i would go with gitea/forgejo (you can always use external tools on top), else i would use selfhosted Gitlab, it has pretty much all the things you could imagine to need with software development and deployment

At my instance I did setup a email wildcard (receive emails from any address on that domain which don’t already have a account) and I get a lot of phishing and scam emails, most of them are send “to” /c/meta@femboys.bar, as link to this community is linked in sidebar, but I also seen emails “send to” random usernames

So yeah, It is happening, i wonder how bad it is on larger instances

you can play on multiplayer just fine, as long as server have enabled offline-mode

For minecraft you can just use a offline mode in pretty much every 3rd party launcher, like SKLauncher

i miss old plex (~2016), when it was actually focused on providing local content, good thing jellyfin exist