And that is where you are just flat out wrong. Your M1 Max CAN run iOS apps.So what? My Intel MAC’s can still run any mobile app without problems, while my 16” M1 Max MBP can’t run **** despite Apple advertising it as a key feature.
However, if that developer didn’t want YOU to run it, then you are out of luck. Has NOTHING to do with your M1 Max. Trying to pretend that this is some technical limitation is just uninformed.
I just checked and I’ve got over 200 iOS apps that I have purchased that I could run on M1 if I wanted. I only use a couple of them as how I use my Mac is different than how I use my phone or iPad.