Idk if mayo is good or not
what I do know is their overall talent level is college level. Terrible OL, WR, meh RBs, meh TEs, zero playmakers on D other than Gonzalez. Worst roster in the league imo. Hard to evaluate a 1st year head coach with that.
Except the patriots have none of that right now. Their roster is awful. Until they get some talent in the roster- the coach is irrelevant too