Um, where I work (which is not important), we have about 50 of the 4K sets running 4K source signals as a testing bed.
Aside from the algo purposely putting in motion-blur to the signal, many are put off by everything looking like a soap-opera, and also the motion sickness kind of thing despite the algo. Depends on how active the source is. Basically too much of a good thing.
Re the fake news - I wouldn't go that far. The black dot that gets missed is explained at how a normal viewing experience *should* be 10 feet away, and also explains how *maybe* you would see it if it is already in your focus of vision, and more or less expecting it. Outside that cone (which he provides tests for), it is easily missed.
The other point made is about the quantum leap in data / bandwidth. At 4k, the *only* way to see it is by viewing live - there is no consumer-level storage media large enough inside a box to make it practical for local storage and playback. Ah, forced streaming.
I see it as going too far with a good thing, but the industry will try to shoe-horn it into adoption, for things that most won't detect. But that's my opinion.
I'll stop since this isn't the tv forum.