TLDR: someone who worked at OpenAI relates their firsthand experiences with Sam (not always positive; some lies and deceptive behavior), while strongly vouching for Helen's and Ilya's integrity and character.
My take: this is a counterpoint to a point that is not very relevant. Yes, the ad hominen attacks are despicable, but it should be a debate of their actions, not people's values and character. It's undeniable that the 4 board members didn't demonstrate competence to handle this situation, and very likely didn't fulfill their duty towards the interests of OpenAI's mission (neither the for-profit or the non-profit one). They don't have anyone but themselves to blame for this s*show.
Some red flags:
"she took the board role with reservations because she felt it was important someone like her was on it" (climber way of talking)
".. Despite the thoughtfulness of those involved..." (cliche way of describing people, also climber adjacent)