Why not? Many meme variants end up in the same bucket, all colliding. They are as duplicates as random rare images. A large bucket can also be inspected by hum

Why not? Many meme variants end up in the same bucket, all colliding. They are as duplicates as random rare images. A large bucket can also be inspected by humans or cut up by applying more perceptual hash function and decreasing tolerance, but it would be counterproductive cheating in this case.