They were though!
I got chicks to grind on me to a lot of those songs you don't dance to.
When you are at a party, no one cares about the song being a "dance" song or not, if it's the shyt everyone gets amped. Some people get hyped, some want to fight, and some want to grind on each other. Most southern songs are not club songs, yet they bump in that bytch. Do you really think U.O.E.N.O is a "club" song?.
https://www.youtube.com/watch?v=eu6bRRDmSRQ
The beat is too slow to get down, the lyrics is on some street shyt, yet the bytches love it in the club. True "club" music is EDM, but when a song is your jam, you don't care, you can jam to it regardless of how slow it is. This is music, not math so anything can make you feel good, and want to boogie.
I don't think people want to hear a gospel song in the club while they are getting their grind on, though. I don't care how good it sounds.