I think this should be talked about more. Does every selfhosted app need to be public facing?
I use Immich as a backup service, so i really don’t have any need to have it public facing. It connects when I’m home. Same with contacts/calendar.

Create your post and put a notice saying it might not be under the rules. I agree with the previous post, the traffic is not overwhelming so the admins might let it stay. We’re human after all.
As for your question, I don’t think I have any community. I usually watch some hardware related channels on YT.

I went with GitHub. In the end it’s just an OAuth service, to provide identity. It’s not used to gather data on you (just the same we already share by visiting regular websites).
I’m still gonna lookup Headscale and Wireguard because It’s been on my radar.