Let's be fair, mature and objective.

Rating: 1/10 (23 January 2018)

People are calling this film a masterpiece, it's not. Let's break down this film's flaws objectively.
The hyperactive cinematography/film editing prevents us from getting any good looks at the choreography.
The CGI and visual effects are laughable (especially when compared to other 2017 releases such as Blade Runner 2049, War for the Planet of the Apes, The Shape of Water, and Wonder Woman).
The backdrops are never consistent, they sporadically change from sets, to painted backdrops, to obvious CGI backdrops. This choice is extremely distracting and looks unprofessional.
People are blatantly overlooking Barnum's many unlikable traits. He makes fun of his employees. He neglects his family. He lies to his family and friends. He has no respect for others. He's a conman. All of these traits are openly shown in the film, and to make it worse, none of the characters call him out on it. No lesson is learned, the audience is just manipulated by the pretty colors, and uplifting sounds of the soundtrack.
While the lyrical content is well written, the music does not match the time period, nor does the musical style line up with Jackman's usual singing style.
All of what I just wrote above is non refutable fact. Now, with all of that said, everyone is allowed to have their own opinion. If you love the movie, then great. Just don't call it a masterpiece because it's not. A more accurate statement would be "It's one of my favorite films of all time." Don't bash critics and other viewers, claiming that they don't know how to "have fun". This is giving into a horrible (and manipulative) message in the film to ostracize critics if they don't like what you like. That's childish. Simply disagree with the critics if you want and be mature about it.