Lots of people in his industry were shallow jerks so he had to become one.

"During his visit, the Late Night host praised Israel's military and hospital staff, and took to mocking Palestinians."

"Netanyahu's new poodle: Conan O'Brien rolls over for Israel"

https://www.newarab.com/Blog/2017/9/7/Netanyahus-new-poodle-Conan-OBrien-rolls-over-for-Israel