The Greatest Showman is fast-moving, well-paced, colorful, and easy to follow. It's worth seeing, but its faults are significant. The songs are all in just one musical style, and it's the same style as in La La Land, and I found the lack of variety tiring. (OTOH, if you like the breathy style of current pop music, you will like the movie a lot more than I did.)

I knew it was a fictional takeoff on Barnum's life, so I didn't mind hearing Jenny Lind singing songs composed for the movie. But giving her a weak and breathy voice, instead of the clear and brilliant voice that helped make her so famous, was a step too far. Over 300 credits in Special Effects speaks to an over-reliance on FX at the expense of performance, and that fits my overall impression.