On a certain level, most of those things don't matter.

Yes, reverse proxying and being able to point a domain is nice

A VPN more secure

Cloudflare (either tunnels, DNS, or DDoS protection) is also good

You can always do better with more "best practices" but if you want to stream a movie to some friends? Throwing up a server, opening a port and providing an IP just works as well. The better you get the more fancy you will be.

Its very much a tinkering hobby. Find a reason you want to tinker, and if you enjoy the tinkering you will keep up with it. My current dashboard points to a direct IP. Most of my services are reverse proxied but for some reason I can't get CORS to work well with dashy. At some point I'll get around to fixing it, but it gets the job done now.