I disagree. Since the Palestinians and other Arabs are always quick to accuse Israel of every wrong under the sun, it's understandable that Israelis would be quick to point out Palestinian attempts to discredit them. This is one instance of an Israeli misfire.
Your comment would indicate that you think the Israelis are always doing this. Care to elaborate further?
I think the Israelis are engaged in a war of propaganda. Remember Mossad's motto: "By way of deception, thou shalt do war".
See Israel's black propaganda bid falters for an analysis debunking Israeli "evidence" against Arafat.