i guess i'm not convinced that the ML hardware is involved in HDR processing.
I don't know either. To be fair, it wouldn't be the first time Apple held back features on older phones that seemed to have the horsepower to handle it. After this many years, I'm just used to that. I don't see the point in complaining about their business practices if I'm going to continue giving them my business. So I just tune out the parts where they screw me over. I'm far happier that way.