Without getting too technical because I hate typing on a phone, you're technically right in the sense of a theoretical hash. But in real life there's collision

Without getting too technical because I hate typing on a phone, you're technically right in the sense of a theoretical hash. But in real life there's collisions. And in real life image or sound compression, blurs, artifacts and resolutions, it is fundamentally destroying information in practice. It is no longer the comparatively difficult but theoretically possible task of reversing a perfect hash, but more like mapping a name to the characters/bucket RXXHXXXX where x could be anything. There are lots of values we can replace X with which are plausible, but without an outside source of information, we can't know what the real values in the original name was.