I'd rather optimize my $20 running shorts around my $1000 phone than the other way around tbh. No phone is comfortable in the pocket when running though, I used to use an arm strap and more recently just take the watch.
But its not about optimisation it's about freedom. I don't enjoy having to baby around a lumbering 6 inch phone. I want my phone to optimise around me being able to not worrying about a brick sagging in my shorts.