So tell me, how is this anything other than your problem to fix? Neither Apple, nor the Consortium are interested in moving OpenGL forward. For Apple it's Metal, for everyone else it's Vulkan.
Why do they need to bend over backwards to make YOU personally happy?
For the simple reason that there is a huge software library targeting OpenGL that is being dumped, or at least will be dumped. Much of it my industry still uses. Plus, spending time to rewrite something from a crossplatform API to a single platform API is not generally wise, so even if I wanted to rewrite all the tools I use, i wouldn't target Metal. That'd be a massive waste of effort.
As far as me, I've stated what I would like to be able to buy. Since it isn't something they intend to sell, I've bought my last Apple system, for myself or for work. So, easy fix. I'm in a market they care little about these days and has more or less dropped them in response.
Again, Linux on their hardware would be great. MacOS on their hardware I won't buy anymore. Not sure why this required so many pages to state. When I bought into it (MacOS) the focus was a bit less walled garden. Simple. A vendor changes something I rely on? I change vendors.
So, my "problem to fix" is to just switch to a different platform and stop wasting time working around their decisions. Hench my interest in their hardware without their software.