Quite a few zoomers are transitioning into this mindset too.

I'm not the only person I know with a considerable storage array hooked up to a homelab powering services for family & friends.

I suppose the more 'normie' zoomers might not, but almost every IT/CS/Cyber/Engineering student I know has at least one self-hosted service they run.

Some even still collect CDs!

the question is how many do that exclusively. I have a local NAS that has all my files, but I also back it all up to the cloud as well, because if my house gets destroyed in a fire, I want there to be copy that's not there.

What service do you use to backup your nas?

arq to backup my laptop to the cloud and my nas, which isn't the same as backing up my nas. for that there's backblaze

I keep three copies with syncthing.

Home, business, workshop.