Earlier quoted context omitted.
It's a severe disservice to non-bigoted, non-toxic people who struggle with a myriad of mental health issues to reduce a description of that specific person to "he must be mentally ill". Though undoubtedly it's entirely possible to be a cancerous individual and also have mental health issues simultaneously.
One of the wisest things I ever heard from a mental health professional: "There's a normal range of asshole, beyond that, it's mental illness" There is an entire range of diagnosable mental illnesses, below that there are entire clusters of personality disorders that don't quite raise to the diagnosis of the others. When it comes to personality disorders, especially, the current consensus of the psychiatric community…
It does actual real world significant damage to actual real world people who then suffer a lot. If such person have real power, say over salaries and firings, the damage is financial and long term very very quick.
It is not just it is unacceptable in abstract way. It is that innocent people are made suffer.