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.