No one is stopping them from doing a DJ-driven sing-a-long show, but that is not a Broadway musical and they should have found another venue. Anyone who has seen Hamilton, Six, And Juliet, or any number of other shows has heard live musicians nailing every conceivable style of music. The “concept” of the show is not a valid argument.
I am gathering you have not seen this or you would not be making this comparison. As I wrote elsewhere, it is not about the style of music; it is about the ability to deliver what would be expected, which is recorded music.
This is an issue about the labor contract and whether an acceptable resolution can be effected so that the production can go forward. That's it.
