Alright, so before you bash gymnastics routines. I would just like to say that not ALL routines ignore the music. it is just that most people who choreograph do not pay much attention to it. so there.
Hence my qualification: "a lot of" floor routines. Not all. As with floor routines, it's the exception that proves the rule---the amusicality is not inherent, and now and then we see a dance piece or a floor routine that actually choreographs to the music, and it looks ten times as good and brings down the house. You'd think other people might notice, and act accordingly, but no.
A lot of people that I've talked to have said that this year's concert was a lot better than last year's. Maybe I just didn't know what I was watching last year, but I preferred it. Last year's had a lot more variety, some ballet, some ballroom (tango/samba) and a lot more variety in the modern pieces.
I also know that many of this year's pieces were written first and music was chosen much later, as a last minute sort of addition. I say, I'd rather see them not use any at all.
I think it's something that really changes from year to year; I'm interested to see what next year has to offer.