Delta Drive, Delta Trust & My Drive · My Drive — storage you own
Is My Drive as safe as Delta Trust for backups?
Short answer: No. Anything holding your keys can delete what's in My Drive. Delta Trust holds a credential you don't have, so nothing on your Mac can erase it — keep it for backups that must survive a bad day.
No, and it isn't meant to be. My Drive is your storage, which is the point and also the trade-off: anything that can use your keys can delete it — including you, by mistake.
Delta Trust is different because it holds a credential you don't have, which is exactly why nothing on your Mac can erase it. Keep using Delta Trust for the copy that has to survive a bad day; your backups stay in Delta Trust whichever working drive you use.