The dominance of libertarianism, and pro corporate licensing within the FOSS world is disgusting and annoying me. I don't have any articles or anything that is hard proof. But I do have this github post and graph I guess
And the other thing I have? A hunch 
I'm glad the software is free, but come the fuck on. "Problematic" for fucking who?? Google? It better be!
Thank you dessalines for having a spine, and choosing a proper license.
And the site that they link? It's not only highly pro corporate but also fucking lying!!!
It doesn't prevent you from selling shit!!! Shut the fuck up!!! I'm not making my work a way for you to easily profit, give shit back or fuck off 
They can keep making the shit that they do, but I ain't committing a single line of code to that fucker.
I'm having trouble following the consequence cascade you're describing. The GPL license updated which tried to add in some copylefting (i.e. Apple was compelled to open source stuff to keep using it). Therefore, they simply stopped updating them so they wouldn't need the new license.
Is that it?
yeah that's the situation as i understand it. obviously im not a lawyer and whatnot but the way i understand it apple would have been required to open source the entirety of macOS if they had included GPLv3 software. GPLv2 was also considered copyleft (in fact, the FSF, who is responsible for GPL, coined the term), but GPLv3 added more stipulations in response to practices by corporations (most notably TiVO) that were not appreciated by the free software community