Many years ago I got pulled into a scam around speed reading. A good friend (at the time) was in the thrall of a conman with an interesting proposal. The elevator pitch went something like this: "Imagine a system that flashes words at you subliminally and when it detects you haven't understood a word (via a biofeedback mechanism) it then flashes the dictionary definition of that word. You could read an entire book in minutes and have complete understanding of the content."
Even though I was young I still could smell bullshit. A small group of similarly-minded people tried to pop the bubble, but when the true believers had invested so much time and emotional energy there was no turning them around. The was more to it than this: crazy mind games, a three-car pile up and other weirdness (including an impromptu cover of "The Rainbow Connection" in an upmarket restaurant), but I won't bore you with the details. The end-point is it soured a friendship which never recovered.
Maybe I'm biased by that experience, but any technology that promises to solve problems by getting people to read faster - instead of, say, with better comprehension - leaves me with the taste of snake-oil in my mouth.