At a basic level, the logic is simple: if you are already booked, you cannot afford to gift the referee an easy second yellow by throwing yourself down. That part is obvious and the punishment fits the mistake. What makes it so strange is that he seemed to have no awareness of how exposed he was in that moment, and that is where the criticism becomes fair because it is not just a bad dive, it is a complete failure of judgement when the stakes were already high. Then the tears come and suddenly it feels like everyone wants to turn it into some tragic scene, but it was still self-inflicted and it still looks ridiculous and I do not know how anyone can defend it without just making excuses for nonsense