No, she didn't. Attacking everyone for baseless motives and identities is the worst kind of activism. She alienated people by attacking them without basis. She disdained those who truly fought for the fairness and justice of every race. She left a bad taste in people who truly cared about progress. Yes, it's totally worth "extinguishing" her role, as her role is nothing but a political charade.
As for under-repented minorities, do you even know the Chinese Exclusion Act? Do you know how large the pipeline of the STEM students in different races and why there was a gap? Do you know why the median GPA of the high school students in the inner city was 0.5X out of 4? Why was that? The questions can fill a book. Yeah, activism is easy, as long as you have the right skin and shameless attitude. Solving real problems is hard.
Yes it's okay to extinguish it if hiring underrepresented minorities means hiring bad actors like her who contribute nothing of value. Scientific truth is scientific truth; if you hire people for the color of their skin or their sexuality instead of their ability to produce truth, you slow the progress of science and make the world worse for everyone.