The culture used to move relatively slowly, so you could take aim. Now it moves so fast, and is so fluffy and meaningless, you feel like an idiot even complaining about it.
I personally believe the film turns out better when shot in one short schedule, plus it doesn't stress the actors.
At the end of the day, there's only a few major stars in the music business, and then there's all these people that are aspiring to be that.