I have 20/20 vision, and I really can't tell the difference between 1080p and 4K for video games and movies. I will never do below 4k again on a desktop, but 1080p is more than fine for a TV. Higher framerate makes a far bigger difference than higher resolution for video games too.
HDR is indeed effectively a marketing gimmick on many cheap TVs. They are getting better though
It’s why even non-4k BluRays sometimes look better than streaming.
Not everyone suffers from FOMO.
I've only seen one movie that was worth the bother and expense of seeing it in 4K (Rear Window).
The rest of the things you mention are mostly for a very small slice of theoretical people with perfect vision in perfectly lit rooms at the perfect height and viewing angle.
Beyond icons on a sticker checklist, they mean nothing to the 99% of people who just want to watch sportsball or eat popcorn while watching Disney films with their kids.
You can put lipstick on a pig, but most people are still watching pigs.
Or something like that. Someone more in the know please check my math.
You can scan film into whatever digital resolution you want. You could do an 8k scan if you felt like it. You might run into issues where the resolving power of the film is less than the scan, but 4k is not an unreasonable resolution to pull out of well lit studio shot movie stock.
Such as it is, I use 3x 1080p displays. It's fine for me, and approximates a larger curved super-wide display (while also being cheap). She does just fine with 1080p resolution however - rarely has more than 2-3 windows on screen at a time.
I can remember when the Nintendo Wii came out, and people I know were damaging things when the remotes would go flying. It's like the Wii release every day in a house with kids. My brother-in-law is on their third TV in 5 years.