You've obviously never watched a musical before. There are things called staging, choreography, and movement that are part of the form, and their point is to enhance and highlight the story and the characters for effect, especially for an audience in a large space. If you want realism only, stick with film.
Or if your goal is just to be a hide-behind-a-keyboard tough-guy killjoy and poo-poo all over something that plenty of people enjoy, maybe just follow the old adage of "if you don't have anything nice to say, don't say anything at all."