Panel tech is expensive and hard and I would want them to put all effort into that.
Implementing stage manager with all the cropping and noise reduction nonsense has been a significant effort compared to just connecting a decent camera and calling it a day. (This is evident by how long it took to get a patch out to make it useable at all.)
And I do not doubt the iPhone being better, but if you take a portrait with the front facing camera and compare it to a photo booth portrait on the studio display, how big is the difference?
The iPhone 12 mini is the newest phone I have to test with, and it is significantly better. Night and day.
It zooms in on my and I don't look so far away from the camera in conference calls.
You can have zooming and cropping without the silly-wide lens.
Besides, with a reasonable lens you would likely look just fine without zoom, that’s sort of my point.