I agree, but just like Kingrojie said in the article: "career destruction and mental health breakdown".

I feel for Kingrojie i do, but if someone is not accepting that they make a mistake, having a breakdown and losing a job can be hard to face. One often looks reasons from elsewhere so they don't have to face themselves and their own mistakes. This causes obsession to find the reason elsewhere. It can be borderline delusional because nothing is more difficult then looking at the mirror and owning their mistakes.

Kingrojie feels betrayed and that's understandable, and he has every right to feel that way, but this seems like destructive and unproductive way. If he really is looking for legal way, i hope that he knows that law can go both ways and staying away from slandering might be a smarter way.