Well no, they didn't prove it. Which is why almost everyone (except the US) who stopped UNRWA funding because of the accusations has since reinstated that funding. Basically what happened was Israel contacted UNRWA with the allegations, UNRWA immediately fired the people and passed the allegations onto the US for transparency, and the US then cut UNRWA funding. Which caused a bunch of other countries to cut funding too. Almost all of them other than the US have now reinstated it because Israel never substantiated the claims. United Kingdom, Australia, Austria, Canada, Estonia, Finland, Germany, Iceland, Italy, Japan, Latvia, Lithuania, Romania, and Sweden.
However I bet the number is higher than 9 people anyway just due to UNRWA having something along the lines of 30,000-50,000 employees in Gaza. The idea that none of them participated or were part of Hamas (the government of Gaza) is farfetched. Hamas had 30,000 fighters when October 7th happened with Gaza having a population of 2,300,000. So about 1 out of every 75 people in Gaza would be Hamas. I don't see why any large organization operating in Gaza wouldn't have at least some Hamas members.
It's really interesting to see what information people around here think is reliable in this. There's way more criticism of Netanyahu (and the Gaza military strategy), for example, in the Israeli press than there is in the US media. Our president/media are still repeating atrocity propaganda claims, like the 40 beheaded babies / babies in ovens etc, that Israeli media like Haaretz debunked within a few days of October 7th.
