The Nazis were not wildly popular, they were a minority government, and they definitely did not improve material conditions for their people. World War II fucking sucked. They barely held on by being at war, stirring things up against foreign enemies, and getting lucky against assassination attempts. Peace would have ruined them.
The Chinese government is not at war. They are vastly less at-war than the US is. They have no rally-around-the-flag effect and yet their people still like them better than we like our government.