If you read the article it's clear that the researchers aren't pulling out the information from the guy's thoughts, they're reading the nerve signals from him "

If you read the article it's clear that the researchers aren't pulling out the information from the guy's thoughts, they're reading the nerve signals from him "imagining" he's writing a letter, and using ML to map that to pen strokes which get mapped to words. So if James Bond gets captured, all he has to do is to not imagine writing the information, he can think it all he wants.