If it wasn't clear, I was saying motion interpolation is a failure. You can't add good data if it isn't there. The only place it might be useful is enhancing sports. Cinematography requires a certain amount of motion blur to work and the motion estimation actually removes it.
I also saw The Hobbit in HFR. The sweeping pans and helicopter shots were near-perfect - and they look terrible at 24fps in a lot of the LOTR movies. In the close-cropped conversation shots, it looked like it was in fast-forward. I think they used too wide of a lens. The other problem is that the shots were way too sharp. It's hard to get motion blur when you're shooting at half the shutter speed but you need it for realism. The CGI popped out for the same reason. Motion blur helps with realism. Most prime-time TV shows are 24p with pulldown to 60i or 30p. Soaps on the other hand are still shot in a true 60i, and that's what The Hobbit also reminded me of.
Saying that 4K is a scam is only partly true. In the theater, it makes a huge difference. My living room has no TV, but I have a home theater setup in the basement. In a home theater, you need either a monster TV or seats very close to the screen. I have the latter right now (two couches in series starting about 3-ft from the TV, but at 1080p (42"). At that distance, a 52" TV at 4K would make a noticeable difference.
Curved TVs are more of a scam than 4K. Unless you have an 80+ inch TV at close range, you're not getting peripheral vision with that and there's no point.