Their evidence does a nice job of making Musk seem duplicitous, but it doesn't really refute any of his core assertions: they still have the appearance of abandoning their core mission to focus more on profits, even if they've elaborated a decent justification of why that's necessary to do. Or to put it more simply: here they explain why they had to betray their core mission. But they don't refute that they did betra…
you are assuming that their core mission is to "Build an AGI that can help humanity for free and as a non-profit", the way their thinking seems to be is "Build an AGI that can help humanity for free"
they figured it was impossible to achieve their core mission by doing it in a non-profit way, so they went with the for-profit route but still stayed with the mission to offer it for free once the AGI is achieved
Several non-profits sell products to further increase their non-profit scale, would it be okay for OpenAI non-profits to sell products that came in the process of developing AGI so that they can keep working on building their AGI? museums sell stuff to continue to exist so that they can continue to build on their mission, same for many other non-profits. the OpenAI structure just seems to take a rather new version of that approach by getting venture capital (due to their capital requirements)