I honestly think you are wrong on this thought. There are TONS of people who play this game that are over your high end estimate. Not that I am saying that there aren't people who play in your Age range, but to say that it is only 10-25 is crazy. 10-25 year old's are usually playing the next hotness that just came out and the free games with some playing NHL here and there IMO. The people that play this sports game, which is much less popular than 2k and Madden by a substantial margin, are going to be around the (giving a similar 15 year range) 20-35 most likely.
This all being said, I will agree the music isn't great but I would rather they spend money on making the game better versus paying for music licenses that, if you ask a lot of people, generally turn off anyways due to it being distracting or they listen to their own music on alternate apps like Discord or Spotify etc.