The show's highs are very high - performances from Simard and Guarini, the choreo, much of the rest of the cast, portions of the book- and whether or not those highs mitigate the show's lows (and they're low lows) enough is subjective, but the highs are kind of undeniable nevertheless. So I'm not surprised it's getting more mixed than straight negatives.
"...everyone finally shut up, and the audience could enjoy the beginning of the Anatevka Pogram in peace."