Etcher, the superior burning choice!

[xtcrefugee]

... or realize then that all their backups are corrupted since the card reader silently corrupted data.

Maybe this is stating the obvious, but if your card reader is silently reading/writing corrupted data then that's what you need to change, not your software.

A better backup solution would be a working recovery so we can get the Pine itself to write and verify backups. I haven't tried FlashFire for that yet (under Android), but it may work.