Respectfully, I hope you don't judge the people you interview the way you judged me based on my question. You have no idea who I am, and surely not enough data to decide whether I know how to learn or not.

In my opinion, it is extremely important for the interviewer to realise that they are in a dominant position. Here, I can tell you what I think about how you judged me. If I was an interviewee, I may not be in a position to lose the job just because I told you that you are being rude.