He probably isn't the first to bet on an NFL game. The question is whether or not he bet on Cardinals games. If he did? That'd be a pretty big deal.
Shaw doesn't play much. He doesn't have any stats for the 2019 season, so he didn't have a direct effect on the game.
I wonder how he got caught. Who was he betting through? How would the NFL prove it if it was through an illegal bookie? Even if it was offshore, that would still be hard to prove.
More will come out, I'm sure.