I think there are a lot of overrated musicians who-for one reason or another-garner undeserved critical acclaim from the music industry and popular culture.
For me, doing covers of old Muddy Waters tunes and hanging out with B.B. King doesn't necessarily merit inclusion among inductees into the Rock n' Roll Hall of Fame.
I feel exactly the same way about a host of other widely regarded rock icons, e.g. Sting, Bruce Springsteen, Tony Bennett, Van Halen, The Beach Boys, etc., whose popularity I can't even begin to fathom.
Then again, I listen to the Irish Rovers, so what the hell do I know?
I like Van Halen, but agree on your others listed. I like one-time VH singer Sammy Hagar as well, in fact I like his solo stuff a lot better than when he was with VH.
Sammy's a big-time Republican, too.