If you post a link to an article, you are endorsing that article as something worth reading. You are stating that you believe this is worth people’s time and attention.

If someone disagrees with that, it is reasonable to tell you that in fact they do not believe it to be worth people’s time and attention and they do not think you should be endorsing it as if it were.

So you know, maybe it’s not just the article that someone is taking issue with, but the person spreading it and encouraging people to read it.