My one and only purpose was to warn them that their “drawback” is more of a gator pit. It’s noble that you’re here defending rsync’s honor, but maybe let them know instead? My preferred backup tool has “don’t eat my data” mode on by default.

Sure, but that’s not in their answer.

only drawback is that it doesn’t create differential backups

This is a big drawback because even if you don’t need to keep old versions of files, you could be replicating silent disk corruption to your backup.

Sounds legit, thank you.