I saw this cool thing where you could use a Raspberry Pi to access your NAS bios from your PC.

That’s PiKVM

Apparently it only has 4k60 HEVC decode and no encoders

I hear rpi5 doesn’t come with hardware decoding, so that is something rpi4 is better at.

But is VPS by definition not self hosting?

Where are your remote backups? In your secpnd house?

and now have zero downtime.

You mean your service availability is better than five nines??