> MacOS is a strictly consumer-facing platform for running App Store Apps

What are you basing that on? Apple markets these products directly to professionals in a lot of cases. They even sell professional audio software.

> MacOS is a strictly consumer-facing platform for running App Store Apps, so I’m confused as to who is even objecting to this feature.

So true, which is why so many of their products have "Pro" in the name.

As a Mac user who doesn't use and has never used any App Store Apps, what the ____ are you talking about?

> for running App Store Apps

MacOS runs whatever you want it to run if you decide to trust the developer.