From a Pro Tools forum which appears encouraging…
In another publicly available document from Apple Porting Your macOS Apps to Apple Silicon, which covers how to create a version of your macOS app that runs on both Apple silicon and Intel-based Mac computers, in the Update GPU-Specific Code section our developer is surprised to see that Apple has not killed OpenGL on Apple Silicon. They speculate that Apple will eventually kill OpenGL when it sees sufficient migration away from it but for now, they seem to be giving it a bit longer. Why this matters is that this will help lots of audio plugins and DAWs that are have not been ported to over to Metal yet for their high-performance graphics.