You're claiming that your idea of 'X' is true, and for evidence of this, you're linking to a site that was created by people whose mission is to advocate for the idea of X.
Am I likely to be getting an impartial view of the situation from a source which solely exists to push X-related messaging?
Is such a group/site really going to give a fair shake to other theories Y and Z, or to conflicting data?
If you start digging into this issue you'll find every example you want. If you only challenge people you disagree with, you will remain wrong.
"You're claiming X is true, and providing me with a source you believe has good arguments for X being true. Very suspicious."
I care about fixing the housing shortage in the city I live in. I spend hundreds of hours as a volunteer, see a lot and read a lot. I'm pointing out what I see on the ground doing the work. And what I see is NIMBYs, not institutional investors or RealPage or 'foreigners' or whatever else the bogeyman du jour is.
If I were convinced the problem lay elsewhere, I would focus on that, because I don't have anything invested in the problem being a specific thing.