Dario is a lot more focused on enabling people with AI, Sam goes on interviews like he's Wormtongue trying to summon a "god". Then there is the whole "open"ai where he took it closed source for profit, the engineers kicking sama out but he wiggled back in (at the cost of a lot of the founding engineers), the suspicious death of a whistleblower, the crazy investment schemes of billions of dollars that he's hoping taxes will save him from, the immediate curtailing to Pete in the DoD, and a few other things that make him at least a highly questionable fellow.

Dario left OpenAI because of the bad he saw there, and made a superior product (though these things change very rapidly).