I’ve seen a few comments that made the same point and I‘m in the same camp, but there could also be selection bias going on, because everyone who currently uses vr headsets is by definition into experiences and doesn’t really care about 2d apps.
I can also image that people come for 2d Android apps and then stay for immersive stuff.
Even if it‘s just submitting the app to a dedicated store by meta, that may already be too much to ask.
For Vision Pro, all iPad apps run directly, but there’s also more customization that can be done to optimize things (navigation structure, translucency etc.).