Giving the penalty kick to the guy who is fouled solves nothing except killing the infrequent meme center back or keeper who likes to take pens. It prevents teams from funneling goals to a single player, yes, but that player was almost always one who spent a lot of time in the box and the replacement player who is now being fouled is still going to be a very attacking minded player 95% of the time. Cool, instead of Lewandowski getting to take all the pens at Barca, he now shares them with Raphina and Olmo and Lameme, who are are technically proficient attacking players. Instead of just Haaland, it's 80% Haaland and then some Silva or Gundogan or Cherki or whoever else is attacking off of Haaland. It doesn't change that penalties are almost a guaranteed goal.