I would look into Tailscale. This would probably be the easiest to setup.

I used to host a ton of stuff, now I just host my WordPress site on Linode.

I have toyed with the idea of selfhosting a Lemmy server, but that's a project for another day.

I think the majority of those people just don't care and are against change.

I can say that to the non-technical person, Lemmy would be a bit confusing due to having to pick a server. However, once you get past that point, Lemmy is a perfectly viable alternative to Reddit, as long as the user base remains active.