I've read a bunch of his material, including one of his books on this very topic. I'm well versed in the topic.

Your description is just a different way of saying what I've said. Harris is assuming a particular definition of free will that is simply false. It's a very naive conception that doesn't have anything to do with free will. I don't mean that in a rude way, it's a definition that most people who haven't studied and contemplated this stuff much at all might have. The difference with Harris is that he actually thinks he knows better when in fact he doesn't understand the philosophy involved at all. Nobody is redefining it, they're just better understanding what it actually is. What Harris is doing is counterproductive because he's just effectively repeating that "free will means having control over reality" over and over without making any good arguments for why that's a good way to conceive of free will. He's not reconciling the phenomenology and intuition with the science.