Yup. A few political cracks usually work, but when it becomes and their main focus, and is completely one-sided (like Schneider) it's rarely funny.
Any time someone becomes a ________ comedian, they're just pandering to an audience that cares more about the first descriptor than the "comedian" portion.
If a comedian wants to go political, that is fine, there is an audience for that. But the audience at a Adam Sandler show is not there to hear political jokes. He totally misread the room.