

I think it considered self-hosting as in self-hosting services/software but not the hardware.
I’m currently using a VPS for multiple reasons. Hardware is kinda expensive where I’m currently living. And due to CGNAT I would need to setup a tailscale node or VPN etc somewhere else anyway. Also home internet isn’t reliable at all here and I may need to access my stuff when outside and regardless if my internet is acting up or there’s a blackout.
Although in the future I’m planning on migrating to a dual setup where my core server lives at home and the public front (along with some smaller services and apps) is on a VPS.

You know border control and passports were never a thing not long ago right and it was never an issue?
When large enough number of people immigrate they start building new communities or expand existing ones and with the increase of human resources and demand new houses, infrastructure, and cities get built providing more jobs, money, and services. It’s how America was built after all.
If the development rate can’t keep up with the immigration rate then there would be less jobs and less services which makes prospect immigrants either find better opportunities at home or look for a different destination.
The only case where this rule wouldn’t apply would be with refugees whether it’s war or natural disasters. And even then after a few years they seem to mostly integrate well with society and the economy.