As said above, this is very true on PRO. Players of all ages play the game so I can understand the staff's point of view in enforcing these rules (even if perhaps so a bit too strict) if they want a "good" environment for the younger ones.
I'm not gonna lie, I get sick of overly-nice-strict communities like this lol. But you can still make/join guilds and other small communities within the game (guild/discord/etc) with the same type of people, I find. So it's not that bad.
I.. have no limit, honestly. I will listen to anything that I find sounds good, depending on actual sound/lyrics/etc.
Music is something very important to me, and it can influence my moods harshly.
That being said, genre isn't a problem.