I liked everything in this post, with one exception. I'm less sure that avoiding speaking like an AI is robbing us of language useful in critical thinking. I'm far more worried about people offloading their critical thinking to AI systems and losing the habit.

Also, the Greeks were worried about rhetoric and, in my opinion, rightly so. The skill to argue a point well is different than those that are needed to be correct. To become a skilled rhetoritician was viewed as dangerous (and right now AIs are only moderately good... though they are improving fast).