She’s old in terms of being a pop star.
She’s jealous because Mick Jagger can still rock and kids know who he is....
Yep. The smarter pop singers transition to some other genre before they hit that wall (especially the women, since their expiration date is “harder” than for men). For example, Tenille from “Captain & Tenille” was only a pop star for a few years but she went on to have a long career as a jazz vocalist because she wasn’t too proud to switch gears.
Madonna’s not a bad singer. She could have done something like that, started making more “adult” music and had a whole other career trajectory, but I don’t think her pride would allow it.