Not posting to start any fires or get anyone upset - just posting my usage.
I've owned an 8+, Xs Max, and a 11 Pro Max. I've always gotten to the end of my day with ~90% on days I work. If I went out with my wife to the LA Natural History Museum (taking videos/photos) then yeah, I could hit 60% by the end of the day.
I've done a 5 hour flight from PHX to DC and read a book almost the entire way and still had 80%+.
I venture to guess with my "light" usage, I could get 4+ days of usage out of my iPhone 11 Pro Max.
Most of my use is on my MBP, iPad. Why do I have an 11 Pro Max? Love the battery life, the screen, and the cameras (I have a 60k photo database). I rarely watch video on my iPhone, but when I do, it's usually short spurts.
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I have a fairly consistent charging schedule and only seen Optimized Battery Charging work only once or twice. I think because I use my phone in my Honda Civic for traffic and have wireless charging at home/work - (which I almost never have to use) - it just can't figure out my charging schedule.
Doesn't bother me too much due to the fact that I could easily get 4 days of use (my use) out of my phone.
My wife (11 Pro Max) usually ends the day and needs to charge (30-40%+) but she's far more active as she teaches classes, has a social life, and does things like that.