I don't think you understand what it means to burn all bridges. He is literally unhireable right now in any corporate context. You are naive if you believe he is doing this out of some hacker ethos.
The idea that he is "unhireable" in the security space because of this is rather amusing.
It’s honestly really hilarious. Oh no, a literal God of Security is gonna have to beg for entry level employment.
In the private sector he is not going to find employment any time soon at a major corporation. You can downvote as much as you want but any management who hires whistleblowers deserve to be immediately fired by the board. It's basic corporate governance 101.