Yes, and they are what are known as "flukes." Your chances of becoming good on bass or any instrument increase 50-fold if you know reading and theory.
Yeah? Well Billy is very fast but he's pretty basic in his note choices, and not that there's anything wrong with it, but I'll take Dave LaRue any day of the week over Billy for rock and roll instrumental skills, and Dave is a great reader and knows theory inside and out. As for McCartney and Pino, don't mistake their lack of reading skills for not knowing theory.
Load of crap. Jack Bruce wasn't an innovator? Chris Squire? John Entwistle? Sting? Chuck Rainey? James Jamerson? Jerry Jemmott? Scott Thunes? And speaking of Zappa, nobody would ever know who Steve Vai was if he didn't know how to read. He was so good at reading that Zappa hired him to transcribe his songs on every instrument. You couldn't even get on Zappa's radar if you couldn't read. And maybe Steve could have been popular anyway, but his first major gig was with Zappa, and you see how crappy that turned out for him, I'm sure.
You gonna listen to me or your friends?
It's not the reading that kills musicians by any stretch of the imagination. Either you're creative or you're not, and reading does zero to affect that. If anything, it turns non-creatives into competent players.