It’s probably less about telling off the UN and more about sound bites / video clips that will play well with his bosses and their political base back home.
Historically, right wing isolationist ideologues of all nationalities seem to cheer and double down when faced with international criticism. They know it’s them and their beliefs against the world and they have a fantasy that they can win, right up until an overwhelming number of them die for it.
Israel as a nation is not in a mood for self reflection and definitely doesn’t want to understand the hole their digging themselves into.