Everyone's entitled to an opinion, but it's worth pointing out that Braid is not only widely considered one of the best games ever made[0], its success was also instrumental in the explosion of indie games in the late 00s/10s. The Witness didn't quite reach the same heights, but it got an 87 on Metacritic and was a financial success.
Even if it's only two games, that's a much stronger resume than most. You can argue that he takes too long to develop games, but other studios also take 8 years to make games and come out with Concord or Dragon Age: Veilguard.
[0] https://en.wikipedia.org/wiki/List_of_video_games_considered...