You have to realise how ridiculous you sound? You're also missing the most important point of all - music is subjective.
Those three acts you've mentioned also have zero appeal to me, but that doesn't apply to everyone. To some people, watching those artists live will mean the world
There's plenty of headliners in recent years that have zero appeal to me - two this year, Adele, Ed Sheeran, Metallica - but to name a few, but suggesting any of them shouldn't headline a festival is ludicrous - their ticket/record sales show that.
One of many reasons I choose to go to Glastonbury is the sheer amount on offer, they literally cater for everyone. I didn't want to watch Billie Eilish, so I watched Primal Scream. I didn't want to watch Kendrick, so I watched Bicep. The choice on offer is like nothing you get anywhere else.