I think it depends on the frequency and intensity with which we use such a tool. Just like language learning, if someone reads a few words of Spanish per week, they probably won't learn Spanish. If they fall in love with someone who only speaks Spanish and want to have deep conversations with that person, they may learn very quickly. If they live in a country where they have to speak Spanish every waking hour for a few months, they also may learn quickly.

While some people may use an AI chatbot a few times per week to ask basic questions about how to format a Word document, I imagine many other people will use them much more frequently and engage in a much deeper emotional way, and the effect on their communication patterns worries me more than the person who uses it very casually.