Oh I didn't realize that. I only knew MoltenVk was on Github and I assumed it would be the same for MoltenGL.MoltenGL isn't free.
Also there is a lot of stuff on macOS that has been deprecated for ages and still works just fine. I don't expect OpenGL to go anywhere for quite some time. We just have to accept there will be no more features than we currently have. With the lack of updates we have seen over the years since the introduction of Metal we kind of expected this, right?