The entitlement often shared on this forum when anything is made that may not suit a particular persons exact & specific wishes is astonishing - almost spoilt-brat childlike!
If Apple had launched only a whole Billie Eilish dedicated channel & weren't doing anything else ever, then yeah, maybe a problem ... This is one show, there are others. Personally I'm not crazy about Ted Lasso, but I'm not losing any sleep over it.
FWIW I think both Billie & her brother are extremely talented musicians and it's certainly interesting (to me) how they've developed such a striking maturity & worldliness at such a young age. The hysteria surrounding them is in itself enough material for a documentary - see similar previous on ABBA, Jacksons, 1D, Wham! etc.
Is everything they do bang in-line with my taste? - definitely not. However to suggest they're anything other than highly talented musically, and with a broad enough base to get the ratings, is both ignorant and/or cynical.