How long are folks planning to wait before migrating to something new? I suspect this is still safe for at least a few months before things fall out of date, right?
Or I guess it allows wire guard to update freely so it’s probably safe until something specifically breaks.
Many registrars let you buy a domain and set up dynamic DNS for it within their system so you can own a domain and get dyndns on it.
Otherwise you could accomplish it with a VPS but you’d only need the smallest one available because it would just need to run nginx to forward to your home ip (and a small tool to update that IP when it changes). So you could probably get something for less than $5/mo.