He has no coaching Pedigree. And they are right to think it's a bad choice. Personally, I think he will be immensely successful. But that's coz I'm partial.
But generally speaking, NYCFC fans are not enthused by being the testing ground for MCFC's projects. And I agree they NYCfc shouldn't be run asuch.
I mean, City fans generally pontificate about the suitability of players who play in other leagues visavis those who play here. Hence the once silly argument about "Messi" and "a cold February night at the Britannia" (I.E being 'Prem proven'). Similarly, one can make the same spurious argument about being 'MLS proven' better yet 'Coaching proven'.
That some think of the hiring as poor, doesn't lack merit. Whether it eventually would prove to be, is unknown.
It is a fact that he has very little experience coaching at the senior level, and even less coaching in the States.
So yeah, I can see the argument for not liking the choice, even if I think he will be a good coach.