You can try and politicise it but I've also been critical of Vampire Weekend, Bland Fender, Killers, Eminem in this exact thread.
As I said, there is no time in history that Britney Spears, Olly Murs and Christina Aguilera would be taken well topping this festival, and no matter how desperately you try to strawman that into "you're just a righty gammon old man", it would be the death of the festival.