Because they wouldn't have a clue what to do with substance. Their "talent" begins and ends at the surface. They scratch at it but that's all they can do. As a result nothing ever changes.
BUILD THE WALL
LOCK HER UP
SEND HER BACK
MAKE AMERICA GREAT AGAIN
FAKE NEWS
HOAX
Surface superficial bloated slogans and phony symbols that occupy the limited size minds of the "in crowd". Cute right?