I like people who can play. I don't care which tradition they play in, whether it's the blues, traditional rock, metal, bluegrass, country, prog, jazz, whatever. A good player is a good player.
I get not preferring a particular genre, of course; people have different tastes. But a great player is a great player, in any genre.
I also think it's a mistake to think of the rhythm section in a blues band, or a band backing up a vocalist, as being subpar musicians. Those guys don't get those gigs without being good players, regardless of whether you see it in that setting or not. And they do it because they are professional musicians, and it's a gig that pays. It's not that hard to figure out.