I'll take a stab at it:
Springsteen jumped the shark a while ago, spends half of his "concerts" whining about politics.
Has anyone from the Eagles put on a good show in the last ten years?
De Niro is old as hell and is in a lot of cringy, ****ty movies now. Also an anti-vaxxer.
Tiger should probably hang it up, he's never going to be Tiger again.
Letterman pulled a Clinton with his interns and nobody cared because he's funny (haha yea ok) and liberal.