To point out the overlooked -- it's equally possible someone at his job tried to talk to him about the issue, and he reacted in a heavily negative way, refused

To point out the overlooked -- it's equally possible someone at his job tried to talk to him about the issue, and he reacted in a heavily negative way, refused to apologise, or otherwise acted in a way that triggered the actual termination. Since we don't have the facts, we don't know, and folk are assuming the company over-reacted because it fits into the proffered narrative.