Art isn't just people drawing a painting and selling it for cash, there's a shitload more to it than that. Also what I said was "if it had no practical use".
I don't see why you're harping on people who want to do something of their own will, and then posting it to the community. It's not a waste of time if they don't think it is, your values are not the same as others and people are allowed to have fun & spend their time as they please. If you dislike the nuke reskins then sure who cars, but being an ass saying it's a waste of time and they should be doing other things with their time is not cool.