There's a huge difference between the two. Shoes and shoe culture can matter a huge amount to some people. Skins aren't really in the same category. Skins literally do nothing, and don't have the same value or impact on a person's identity or social standing. Shoes do. Not to me, but some people do care.
It may surprise you to know that there's a similar culture that revolves around skins. That's why people buy them and trade them.
I don't know a lot about it and it isn't as clearly visible as sneaker culture but I know it exists, because I used to play that game and there were people in various discords and steam chats who were obsessed with skins to the point it was all they could talk about.