I loaded the video, paused, jump jump jump jump jumped through the timeline looking at the thumbnail images, about 5 seconds of actual playback while I watched them mess it up, more minor adjustments in the timeline, paused for 15 seconds at the thing I actually wanted, closed the video.

Good luck getting any kind of decent metrics out of that.

I can skim documents at 800 words a minute, they are mostly nicely arranged and indexed/sectioned. Compare that to videos where half the words are "um, so", and it's no wonder I prefer text.