Are all my friends and family musical idiots? Or is it that we do we not belong to a snobbish clique who worship a player that is most likely amazing but is not a well known outside of select bass circles.
if you and/or your tribe have no interest in musical history, carry on and live a good life.
but please don't imply that people who have listened to the music for forty years and happen to be aware that a certain musician existed and happen to think that musician had an impact on he music are a "snobbish clique."
there's really very little less attractive than "reverse snobbishness," where someone slags everything they're not into as "snobbishness" or "elitism." that poopie was old when we were all fresh and new on this rock, and it isn't getting any younger.
now about never having heard of him. you don't have to have heard of him. billions of people have never heard of Miles Davis. Or JS Bach. or Aretha Franklin. or Joni Mitchell. or Gordon Lightfoot. or all kinds of historically important figures in "Western" music.
that doesn't make them unimportant. and critically, that doesn't mean all those people haven't been affected by the musicians they've never heard of. if your family have never asked you for a miles davis tune, and don't know who he was, that doesn't mean your family has never heard and liked someone influenced by miles davis.
in 2020, it's nearly impossible to listen to electric bass players and not hear Jaco's influence. that's how music works, people influence each other. i'd bet you've also been influenced, whether you are aware of it or not. if you're curious about looking back and finding out how we got hear, great. if you aren't, also great.
it isn't a requirement.