No, I really meant what I said. If you see a video that's labeled "60 fps", quite likely it's actually 60/1.001 fps. It applies to the entire 24/30/60/120 range.

I re-read, and your claim was "derived from NTSC", not that NTSC itself was 60/1.001 fps. So, yeah. NTSC itself was (30 frames or 60 fields) / 1.001. "Derived from NTSC"... yeah, that could be "60 frames".

However it is perfectly possible to skip the half scanline between fields and produce a non-interlaced display with half the vertical resolution and twice the frame rate.