It's a pretty simple case of Wittgenstein's ruler for me. It tells me more about ADL as an org than the content.
It is obvious that Wikipedia admins communicate with each other. The fact that Aljazeera is referenced is also okay.
In fact, this is not the official Israeli narrative, it seems rather trustworthy.
https://en.wikipedia.org/wiki/Israeli%E2%80%93Palestinian_co...
This is like citing an entire book to prove a point.