Apparently he didn't notice the negative energy when he gave his commitment after the 2015 season. But watching the team underachieve to 4-8 is most certainly going to produce negative vibes. And it's not like he flipped in a lateral move. He went to a program and coach with a better track record of success.
I'm more concerned when we lose the Anthony Barrs of the world or players in a position of critical need to schools that Notre Dame shouldn't be competing with to land recruits.