How so? It’s really pretty simple. More gigs where you are playing the same stuff you already know and not pushing yourself vs fewer gigs but more time spent working on stuff you don’t know well. Another example. KB player I know is great at one specific genre and plays out in that genre all the time. He can’t play outside of that genre very well. Throw a chord chart in front of him and ask him to play through it and/ or solo and he’ll struggle. Fewer gigs and more practice solo or with others playing through charts like that well elevate his musicianship. However he seems happy where he’s at playing the same stuff 3-5 nights a week he’s been playing.