If I showed up to a gig with my £50 Westfield P bass, nobody would care or notice the difference.
Provided I play the right notes and respect the song, that's the bit that actually matters.
All the other basses are there because I wanted them and was in the very fortunate position of being able to acquire them.
Also, I'm shallow enough that if I know that there will be audience members there who care about such stuff, and I'm on a nice stage, I'm bringing out the flashy stuff. ( I'm occasionally fortunate enough to get to do that.)