Suppose they simply directly quoted Wikipedia or some other expert authority, with attribution, rather than AI. Would you say the same thing? The person isn't giving you the uniqueness of their brain's weights and biases when they do that, either. That doesn't make the response any less helpful or appropriate in the situation.
People quote other sources sometimes. That's entirely OK. In fact, sometimes it's completely appropriate. We have to get used to the idea that sometimes, that source will be AI, and pretty soon (if not already) it will be just as authoritative and correct as Wikipedia or any other expert the person might quote.
If you don't like it, instead of responding by sending them a link to an aggressive, insulting, disrespectful and frankly low emotional IQ site like this, you can just say, "OK, thanks, that's great, but what's your opinion? I'm genuinely interested in hearing what you think." Unfortunately, if you send a link to this site, you are more than likely to lose the person entirely from the conversation anyway.