Definitely true, and 4k video shot at a high shutter speed is a good option. Using a DSLR I film hummingbirds in 4k at 2000 shutter and get some nice images that would require pure luck to get when shooting stills. You're basically shooting 8Mp stills at 30fps if your shutter speed is high enough--but the video will look choppy. But if you're after the stills, go for it with a high shutter speed.
Good to know. I'll have to try it out on my MPP assuming the shutter speed goes that high.