You seem to have missed a key paragraph in the original article;
“It’s sad that Rick descended this far. His manager shares in this responsibility. In fact, the original management team was held accountable: they were let go first.
Unfortunately Rick was so far gone that he couldn’t, or wouldn’t, be brought back. No amount of coaching, feedback, time off, or assignment to other projects changed his toxic behavior.”
Yes, this was a failure of management and they were fired FIRST but attempts to reform Rick subsequently failed.