Mostly, it makes leisure reading on the train faster when commuting to/from the office. Unfortunately, it's not great for academic or technical articles, which is where I had really hoped to benefit when I got started. Citations ruin the flow and charts/graphs can't be viewed in a speed reading app.
Good tools for the tool box, but you have to pick and choose when you use them.
Update: OTOH, if I watch your video, maybe I'll learn some techniques that will work even with citations, charts, and graphs. Haven't watched it yet, but I've saved the link.