But that doesn’t replicate feet on a board. In true skate you literally position your fingers on the screen so they mimic feet on a board, and the movements required for your fingers are moreorless that of your feet in real life skating.
I’m definitely not saying there isn’t a way to control the game, or that games don’t exist with similar play styles, but taking away the actual placement of fingers on the board onscreen would take away an awful lot of the reason people enjoy it, and it wouldn’t be the same game.