What stands out is that players are so used to referees using a higher threshold for second yellows that they start gambling on it. This time the gamble lost.
At elite level, discipline is part of quality. People separate them too much. This was poor judgement under pressure, and that is absolutely a football weakness.
The sequence is worse the more you watch it. He is not reacting instantly in panic. He has multiple moments to stop making the situation worse and ignores all of them.