Thanks for sharing the link!! That is really interesting. If one could deal with 100% brightness with no RWP or limited RWP, it sure seems doable!I’d refer back to this excellent post:
https://forums.macrumors.com/threads/eye-strain-while-using-iphone-x-and-up.2085427/post-31502979
Perhaps it isn’t viable with RWP set higher than ~ 75%.
It depends how sensitive you are to PWM. I had an amazing experience with iPhone 13 Mini, but still got headaches to the level that I shouldn’t realistically be able to keep it. iPhone SE is fine as an alternative.
I am looking at this and for me, I would likely need brightness down to 50% if I wasn't using RWP, or maybe 75% and then setting RWP at like 50%.... and so that roughly appears it would get me closer to 9% or so for the PWM modulation. Still better than the other models on that list including the 13 Pro I had been using, but far from that sweet spot at 100% that you had mentioned.
I wish I could set it to 100% with no RWP, and then get some sort of screen protector that is darkened and simply blocks a lot of the brightness, that would be the answer for those like me who are sensitive in that way.
It sounds like you may be wanting to try it again, and you mentioned the headaches- do they seem minor, and do they occur every time you use the phone?