In this particular case GGP hints that Israel gets favour treatment to gets away with anything. GP then retorts that others get away with as much, which is a valid objection to that claim, since it is invalidates the supposed Israeli exception. Neither GP nor GGP claimed that anybody should get away with crimes.
Neither the claim nor the objection are backed by any argument so the whole thread isn't very illuminating, but it has become in fashion to bring up whataboutism against any attempt at contextualising the discussion and I find this a curious trend.
Often when someone’s arguments are valid and convincing, but their entire vocabulary seems confined to an issue, asking yourself a couple “whatabouts” may help you see biases inherent in the topic bias.