Honestly I dont mind people being hypocritical IF they are currently int he right. People can change their opinions for the situation. But the fact that he does it simply to win an argument, rather than a realization of any meaning is the real damning part.
Also its just such a shit excuse.. like I know plenty of people who literally lived their whole lives in israel or palestine and clearly are so biased by their personal expiernces couldnt even begin to see the situation objectively or clearly. Sometimes NOT being in the situation can give you greater clarity than someone on the ground.
When I was in israel i had bombs blowing up all around me sent from Palestine as I sat in my high rise home, constantly needing to hide in a bunker. Most people would develop a clear bias and hate towards Palestine due to that personal experience regardless of the details around it. For many going there can be what makes you biased. I am just exceptionally good at emotional detachment (though not perfect), so for me that didnt really bias me strongly and I was more effected by my time getting to know the people on both sides and understanding their views.