Who wants to hear songs about white supremacy?
The original Grease was fun-loving and sweet. The Left has no imagination, no humor, no affection, and must ruin everything we look upon with fondness. They have to destroy everything with their forced ideology. Their contempt is particularly aimed at the 1950s, where there was innocence, family, love, moms who cared for their family more than a stupid job, and people went to church. Oh, and TV shows and movies that were actually good and memorable, unlike the trash they spew out.
It's not about 'who listens'.
$5 that it's an opposing group singing those songs, i.e., a slur on the right.