Ironically I don't think it's a particularly good copywriter unless you're specifically aiming for cheesy ad style or utterly generic, it's just that standards

Ironically I don't think it's a particularly good copywriter unless you're specifically aiming for cheesy ad style or utterly generic, it's just that standards are low, and lots of copy isn't really written for humans anyway. We just care about and have fewer pre-written examples of other stuff more... (its real strength as a writer over humans other than being low effort is niche stuff like composing entire sentences with alliteration)