I don't actually know of any good external resources for defining "derail" in this context. I learned about the concept through work, and didn't want to just blatantly copy-and-paste that document into HN.
I did about five minutes of Google searching. Pointers would be appreciated.
Your comments border on bigotry. People don't want to engage with someone who has a closed mind.
Pretty much everything you've said about borderline PD is fucking nonsense. There's no point responding to someone who so clearly demonstrates they don't know what they're talking about. None of the stuff you've mentioned has any link to borderline personality disorder.
If you're going to use mental health diagnoses you should 1) use the right one and 2) probably just not.
In general when you find yourself saying stuff like "the Jews did it" or "Asians can't drive" or "black people can't swim" or "borderlines ..." You should probably not bother.
People with BPD experience significant stigma. Not just from the general population but from health professionals, including mental health professionals too.