Why don't they also flag repositories with lots of names, those are PII. Too many addresses? That's a red flag.
Why would you even for a second entertain this nonsense? Non-technical people who think this:
https://github.com/Hack-with-Github/Awesome-Hacking
is a smoking gun to prove Github as a company is supporting hackers are the ones putting forth this idea, no one with any technical knowledge should come close to supporting this.