Most people in politics are about themselves or they wouldn’t be in politics. Some say nothing and just roll in the special interest dough, enrich themselves and do whatever the leader says. Some speak out and irritate with maximum venom like Pelosi who makes sure her own financial wheels are greased. Some irritate but have the best interest of Americans in mind. This would be Trump.
There isn’t a single one who hasn’t got a big ego. Trump was also loving enough to award his friend Rush Limbaugh in a most beautiful way for his love of America before his death.
There is no doubt that politicians are ego-driven narcissists. Highly successful ones can mind their manners in general and avoid attacking their teammates in particular. Ronald Reagan was very successful and never spoke ill of anyone. The same was true about Washington and Jefferson. (John Adams was a special pain to TJ, however)