I had seen the video where Jake talks aobut his ukulele, but I couldn't find it. Thanks for posting.
I agree that getting used to the quirks of a particular instrument is important.
I'm not sure that this applies as much to most people who are just playing for fun, but spending some serious time playing a limited number of ukuleles, probably helps more than casually playing a dozen or so.
But I have found that picking up a different ukulele after not playing it for a while is a good thing because I hear differences and it gives a fresh feel to a song. I know with my tenors each has different strengths and weaknesses and that will influence how I play each one.
John