They listed Greyzone as an unreputable new source because it’s pro-Palestinian. When you Google the usernames of those who voted to ban them pro Israeli think tanks from DC come up. Wikipedia is a joke when it comes to politics. If you’re lucky you can find the real contours of an issue by seeing who’s been censored and silenced out of the article on the Talk page.
One example of a heavily debated neutrality issue was the opening paragraph of the Zionism article, which ended up like this. Surely noone would call this remotely pro-Israel? "Zionists wanted to create a Jewish state in Palestine with as much land, as many Jews, and as few Palestinian Arabs as possible."
[1] https://en.wikipedia.org/wiki/Wikipedia:Reliable_sources/Not...
What isn't a joke when it comes to politics? The only way to be informed about politics I have found is to regularly read news from several different media sites paying careful attention when they talk about the same issue. This way you learn their biases and how to interpret their news articles, you get the ability to guess what really happens, not just their takes on it.