I find it ironic how nirvana's MTV VMA performance is now considered tame

what with britney spears kissing madonna(whose like a virgin performance is also tame nowadays) and miley cyrus dancing last year and whatever else she did this year. Even christina aguilera in her drrtty girl look is pretty edgy. Nirvana wanted(well k.cobain did) to play the song rape me at the VMAs in 1993 but MTV said no as it might be too "edgy". Well nirvana played the start of it then switched to another song and it was a troll move. How tame is that? Also MTV pushes itself as edgy programming for teens so I find it yummy how they can hold back