The fact remains that the source for this claim is bro trust me. Nobody should care who I trust. But I'm sure most people can see that "bro trust me" is completely useless. I will believe it when I see evidence
Nobody should believe anything because of a "bro trust me" and if you do you have a serious problem. I know nobody cares if I believe it, I am not stupid
Scepticism in the face of a lack of evidence, especially for a claim from one side involved in a war, is not only a good idea but necessary. Would you just believe a Russian claim about Ukranian schools, no questions asked?
If you look at documents at the time, intelligence agencies said there was a possibility he had WMDs, but there was no conclusive evidence nor assurances.
The Bush Administration lied to Congress and said we knew for sure they had them.
Edit: It's good to have healthy skepticism -- it hasn't escaped my notice that the majority of evidence behind this claim is coming from Israel. I don't think it's wise to deem it automatically false however, and pulling funding is premature. There should however be a serious internal investigation. And if they already have smoking guns, the UN should release them in the interest of transparency.
Apologies for starting out my comment as a bit of a jackass.