In watching the clip from 'The Great Zigfield' and seeking a comparison to a movie similar in tone and subject but without the code, I thought of the most recent musical, box office smash - coincidentially, also a super softened look at an early leader in show business "The Greatest Showman".
https://www.youtube.com/watch?v=rQWZK5U233s
The differences here are subtle, but are- to me- interesting. In the Zigfield clip, the subtext is flirtatious and a little ridiculous. As the professor mentioned, it is kind of silly - the song, the actors' double takes and movements, even the song and 'Little Bo Peep' costume. In the more recent film, the subtext is a little darker - it hints at (spoilers here) possible infidelity and possibly sex. Elsewhere in the more recent film, we have two characters who, we can assume, might be an inter-racial couple. Even the songs- from the flirtatious older song to the more adult, heavier song in the updated film - everything in the new film feels more comfortable with emotions (even if those emotions are suuppper clumsily portrayed).