Like, I mean, I get it. It was made in 2017, and to expect it to all be opera and vaudeville would've been unreasonable. But the dissonance was just a little too cringe-y. The music wasn't even particularly clever, save the song at the very beginning (the one with the feet stomping).
The music also came to seem rather repetitive rather quickly. And of course, they totally glossed over the more unsavory aspects of Barnum's career, like the fact that he was a f***ing slave owner, and that he probably just exploited his circus performers rather than letting them be "free to be themselves" or whatever, or that early circuses tended to grossly abuse their animals. The part about the singer kissing him on stage seems to have been nonhistorical, not does it appear as though he actually married the daughter of a wealthy man, though of course I could be wrong about that. On the more positive side, the fact that he was a philanthropist and even a politician was ignored, as was the fact that he didn't enter the circus industry until he was an old man.