I think the first wasn't a penalty either because Grassi clearly dived. The penalty awarded to Napoli is the typical new rules penalty instead: the defender tried his best not to be hit on the arms by the ball, but he could not cut his arms. I don't want to think that the forwards nowadays shoot at the arms height on purpose but it is surely easier to hit the defenders arms than scoring a goal. Welcome to serie A 2019-2020.
I haven't seen many of those @ToniSamp ... this is what we were talking about though (@JCamilo )...the rules should be amended to refer to natural positioning/movement and whether a player is moving towards the ball. Bring the common sense back.