Here's the problem: This Falk person has expressed anti-Semitic attitudes on at least four occasions cited in this one article. And NO, it's not impossible to be born of Jewish parents and have bias against Judaism and Jews: perhaps it's illogical or inconsistent, but since when is *that* unusual among humans?
So, there are at least four instances of 'prejudicial' statements by this individual - and they are PUBLIC and DELIBERATE and 'official'. He HAS to know he is 'a public figure', and the POV he has chosen to present is a biased one.
When the Secretary-General of the UN is chastising Falk for his bias *publically* as well, I think Mr. Moon ALSO knows he himself is 'a public figure' and is well aware of the implications.
The headline of the ARTICLE cited in the OP, which was used for the title here, is one of those misleading 'grabber' things. It's not the OP's fault that the headline was so misleading. The 'report' alleges: there doesn't appear to be much in the way of actual proof nor opportunity to provide any proof. It is far from comprehensive and not necessarily factual.
This report addressed in the OP is not the Falk Report. The Falk Report addressed other human rights abuses of the past year and thst are ongoing, but was not focused on abuses against children.
Do you or do you not understand that all "reports" regarding Israel via the UNHRC involve Falk?