That's a dangerous path to trod Kathy, insinuating to your kids that their musical heroes are somehow inferior
I was pretty brutal to my older daughter, nim, always with reference to her (formerly) beloved One Direction: "Who's playing drums here? Oh, that's right—none of them play any instruments! They always use session musicians. Hm!"
And that's not to diss session musicians, of course, but it would enrage my daughter, which was the point.
She'd always take the bait, so of course I never let up.