Lol, there you go again. What are you talking about? You think people will willingly turn off their own cognitive faculties because they're 'useless'?

I can't find any decent bloody articles about the actual methodology as per usual, but it sounds like what they were doing was playing recordings of words to patients and trying to reconstruct the sound from brain activity. It is extremely dubious therefore whether this actually corresponds to 'mind reading' or not, because it is an unsolved question as to whether, or to what extent, human cognition (specifically high level, 'conceptual' cognition) is based on language, or to what extent thoughts in general, or even thoughts about words, produce as a by-product brain activity related to their physical enunciation.