Oh man, this is an amazing two sentence work of art! It packs in so much. There's the timeless "music stopped being good when it stopped sounding like it did when I was young" bit. ("These 'Beatles' and 'Rolling Stones" are just passing fads, give me Benny Goodman any day!!") There's the dismissal of a performer with 20 straight years at the top of the industry as a flash in the pan and indistinguishable from an old Disney Channel kids' sitcom because they both appeal to "females" instead of "people." Solid gold, thank you.
But yeah, guitar rock bands are something of a dying breed, the radio plays a lot of the same stuff as decades ago. Though some of the young "females" in pop are actually recording rock songs that don't get acknowledged as such, e.g. Brutal by Olivia Rodrigo.