alt Hacker NewsThere's no personal attack here.
Unless your position that any statement whatsoever made in the second person that isn't a compliment is then an attack?
San Francisco is a magical place where "you are doing X wrong" without slathering on six paragraphs of fake kindness constitutes some kind of personal attack
"You're working on a false sense of security and encouraging others to do the same" was needlessly personal.
You can make your substantive points without that, both in San Francisco and elsewhere.