You seem to be missing the point about what he means to taboo a word. In LessWrong speak, this means to expand out what you mean by the term rather than just use the term itself. So for example, if we tabooed "prime number" we'd need to say instead something like "an integer greater than one that has no positive, non-trivial divisors." This sort of step is very important when discussing something like consciousness because so many people have different ideas about what the term means.