He got exposed because in his first run of the playoffs, against quality teams, his coach was terrified to have him throw the ball, and when they did let him throw the ball he was terrible. Everyone loved Garoppolo for the regular-season record, but when push came to shove his came up very, very small and not even his own coaching staff trusted him.I don't really understand the "exposed" comments. Yes he's 28, but he spent 3 years backing up Brady (obviously he wasn't going to take the starting role from him), then dealt with injuries for two years in SF before playing a full season this year.
His age matters because I suspect a lot of fans see him as Mahomes' age given he didn't play much at the beginning of his career, but he's essentially already in his prime years or past them. If this is his peak then he's probably not good enough. His decision-making last night was WOEFUL.