It is jarring to me that most of the dancing seems slightly out of sync with the music. It is like a music video uncanny valley - images look good, but the lack of sync to the sound shatters the illusion entirely.

To me nearly all of the real world dancing looks like that. The dancers could literally be olympic level and I still don't see the connection between their movements and the sounds of the music. Music videos sometimes do sync for me but only on very simple motions, and for whatever reason shuffle dance on video almost always looks great.