>you must not trust anything they tell you going forwards

I respect the rest of your comment and have no reason to disbelieve you factually. But this comes off as propaganda. It's a hateful assumption about a person and a conversation you have no idea of. You shouldn't say this to strangers if you're trying to convince them of something.

I'm quite confident, based on my interactions with both strangers and non-strangers in the past, that the original commenter got their information from anti-immigrant propagandists. It does me no good to convince them of something if they're just going to read another paper or tune into the next podcast episode and get more false reasons why immigration should be restricted.