I'm working in the video field. Let me tell you something. When the post house want you to check out the color of your work, they'll make sure you have an iPhone. If you have one, they send the file to you to see. If you have other brands, they won't bother.
Why? Because while some other phones are colorful, this is not a good thing if it's not color correct. I haven't check out other brands for sometimes so I have no knowledge of current situation. All I know is most of post houses here still didn't send the file to you if you're using other brands.
4K is hyped up because 1080p has run its course. The majority of people, who's not poor, are having one so manufacturers need something new to sell you. On the normal living room dimension, few people will benefit from it, unless you have screen bigger than 80-90", which most people don't.
Apple hyped 4K ability on Mac Pro because Mac Pro aims for professional market, not consumers.
If you think more resolution is automatically better without taking other things into consideration then you just fell for marketing bull__ like camera pixel war a decade ago.
Ironically, from your posts that accused people of falling for Apple marketing gimmick, you're the one who fell for marketing bull__, like this one.