>>22636

The reason is, no-ones tagged those things because it's a niche interest. When I visit a booru there's lots of tags about socks and eye colour. When I'm fapping to girls getting mashed by industrial machinery I honestly don't really care about those things. But if I upload an image to a booru I'm expected to tag what sort of socks the girl is wearing -- because lots of people care about socks.

Don't get me wrong, I like stripey knee socks best. It's not like I don't have a preference.

But the point is this though: there is literally an infinite number of ways to categorise an image, and attempting to do so is an exercise in futility.