For me, the one feature that sells having an iphone and a Mac laptop to me is copy and paste between the two devices. I spend way more time on my phone than I should, but being able to go from my phone to my laptop and back is what has me in Apple's ecosystem (for now). MacOS and iOS feel like they are buggier than they used to be, (don't get me started on 26) but framing it purely as a luxury and brand identity thing, without looking at usability details like battery life is an oversimplification.