Here is my take....
I have "heard" Obama has orchestrated the UN vote, but have not seen any viable proof that he actually did it. Much like the hacking theorist on whether Russia interfere with the elections... no proof has been provided to the general public.
Neither Israel nor Palestine has clean hands when it comes to the issues out over there. Both have done things to subvert the peace policies and try to build a consensus on how to make it a two state area.
When Israel with drew from the West Banks, Palestine responded by throwing rockets over the wall.... when Palestine wanted peace, the hard liners in Israel blocked the move. This is all very well documented on the net.... no neither side can say "We are clean".....
The issue is not whether the US sustained from the UN vote... it has been done multiple times since 1947.. the real issue in my mind is the scathing commenting Kerry made in behave of the US President. That to me, is a sign the the US President has made it clear that the US/Israel unity has been fractured.
I believe one of the main purposes of these comments (my opinion only) is to throw a grenade over to Israel for their support of Trump. Obama seems to me to be a pretty petty person.
I support Israel, but like in our country, extremist their views have made it difficult to make lasting peace with the Palestine government. The Palestine people are a bit a weird group, they are never happy... if you look at their history they have been thrown out of the countries of Jordan, Syria and other Arab countries the exact same reason that Israel has a problem with them.... They do not play well with others.