> I'd assume the link to be to a blog post, or Wikipedia page, that articulates the idea in a clearer more succint way than the person might be able of.

As with everything, it depends on who is sending it. For some people, yes. For the rest (majority), it's a case of

He: Makes some claim

Me: I question some aspect of it.

... Potential back and forth

He: Oh, just look at this video/article/book that explains and answers all your concerns.

Thing is, in the majority of the cases, it didn't address my concern. I'd write up something in detail, and get back either silence or yet another link. Took way too long for me to realize I shouldn't bother clicking the link to begin with.