My 8yo daughter thinks TikTok is a personality trait

She literally tried to do a dance from TikTok during her soccer game last weekend. Not exaggerating. The coach looked confused. We've got her down to 30 mins on weekends but she's obsessed with copying trends. Anyone else dealing with this? Her friends all have TikTok accounts even though they're not supposed to and I feel like I'm the only parent saying no.