I respect him for eating humble pie now.
I absolutely do not respect yet alone absolve him of not doing so originally. Why would one? There's nothing NEW that came to the table: Facebook can do what they want now, and crucially that was the case at the time of those promises.
Founders literally sign away their right to make these promises. Whether they're made out of ego, faith, hope, naivette, inocence, or just riding that payday high and feeling king of the world - acquired founders need to stop making them and we need to stop believing them; and holding accountable / not absolving is a step in that direction. They're not evil people, they don't need to be doxxed or torched... but it's a certain level of wrong to make promises you absolutely positively cannot deliver upon, and good will does not make such ignorance OK :-/
Sorry if that came harsh; I feel bad for Palmer... but hey, should we not feel worse for those who believed him and acted upon that belief??