Ever considered these aren't the full set of exploits the researcher discovered? Or that he can find more since he found these? If I found a bunch, I'd certainly withhold a few as insurance.
Sure, but GitHub and Gitlab aren’t the only two ways to share code on the Internet. The conspiracy theories about two unrelated companies shutting down his git accounts to prevent him from releasing these supposed exploits are reaching pretty deep into conspiracy theory nonsense. The conspiracy theories can’t even agree if he was banned for posting them or because he hadn’t posted them but might post them.
I can see a situation where Microsoft contacted federal law enforcement to strongarm both GitLab and GitHub. But I believe all megacorps are one giant government conspiracy so consider the source.