There are people out there who don't know how to set up their bass and some who don't even know how to change their strings. Some people just play and don't worry about the technical side. Personally, I can be almost anal about some aspects of it but each to their own, I suppose, your average punter just hears the band as a whole without distinguishing the individual components so as long as the player is comfortable with what's going on it's all good.