Out of laziness yeah, but it could probably pretty easily be set up to turn it off and on when needed, since you can schedule when the Backblaze backs up.

I run a Windows 10 vm that shares a drive with samba, I borg/kopia backup everything to it, and it runs the backblaze client which then backs up to Backblaze personal backup.

I was able to get a .win domain for $4.16 yearly on cloudflare. Cloudflare seems to have some pretty cheap domains.