It takes considering her audience. She is trying to wake up other black people. She is also trying to wake up white people that call for white genocide and buy into the white privilege nonsense.

As she said elsewhere people like Thomas Sowell are very influential on her current thinking, but they sadly are far more verbose than most of the audience she is aiming for will listen to. If she can shake them up then perhaps they'll look into Sowell and other brilliant people. If they cannot be shocked into looking though they won't bother.