We use Pro Tools in our studio and we recently upgraded fully to windows (it was created long before my time when people thought Apple products were superior). We still have some old mac systems with Pro Tools prior to version 10 installed which we'll need at least for some time for compatibilty with our archive.
For your problem: I'd rather stay with an old system (if it ain't broken no need to update) instead of breaking backward compatibility and using software that introduces new bugs and errors due to fundamental rework. We just can't allow that in our daily business.
edit:
IIRC exactly that existed as a freelance project for some time but got shut down by Apple or miraculously doesn't work anymore.MeldaProduction wrote: ↑Fri Sep 13, 2019 2:24 pmAnd supporting it may for example mean that Apple would make a layer on top of Metal (if they love it so much), that would emulate OpenGL. Instead they say "f*** you developers, you do that". And they do that over and over again.