Most games of the NES, Genesis, and SNES era ran at 240p, 60fps (in the NTSC regions).

Just because you're okay with 30FPS doesn't make it "fine" or "good" either. Higher FPS is objectively better. Period. That means 30FPS is bad, when the other options is 60FPS (Or higher, because the console is being DIRECTLY MARKETED to the consumers as a 60FPS-120FPS console)

Nobody was motion sick or got eye strain.

Wow, I didn't realize you could speak on behalf of everyone's personal reaction to FPS

The difference is that TV and movies have a consistent delay between frames. That is often not the case with video games.