Yeah this is the assumption, even pre-OSX. I won't claim to know the majority of mac users, especially not since the large uptick in the 2010's... but it seems,

Yeah this is the assumption, even pre-OSX. I won't claim to know the majority of mac users, especially not since the large uptick in the 2010's... but it seems, in my experience, very much the norm to not maximize windows and I wouldn't be surprised if people who do maximize are mostly Windows converts (not that there's anything wrong with that).