Yea, lets burn that silos they would be calle appSilos

And yes, self custody is a must, but ln address its gonna need always a server working, afaik its pretty simple, it just attach a lud16 to a email like addres, something like nip05 do.

So best solution its to run your own server or vps, buy a domain and start forward payment from you@yourdomain.com, with that you can even manage to receive email trough that email like addr