While I appreciate the anger please consider that “mediocre <ethnicity>” is not a very nice way to phrase this. Also given the recent demographic pole there are many “white” people here who are likely on your side. It particularly hurts when people on your side use language like this.
The endeavors were already relatively safe. These people pushed the envelope on how unsafe they could make it. There were warning signs, red flags, and a whistleblower.
What they’ve likely done is set back this type of exploration.
My concern is with the words themselves not who they’re aimed at.
As an aside you should never consider yourself mediocre. Good people are far from mediocre.