... and if AVP is a big hit they can do something about it then.

Because not checking a box costs a ton of money...

This is 100% a spite move. They could have let their iPad app run on the Vision Pro but instead disabled it.

Don't get me wrong, I'm definitely disappointed that Netflix went out of their way to disable backwards compatibility for their iOS app. They think they won't get an ROI. I hope they'll realize their mistake soon.