Patrick Collison seemed satisfied with Sam's tech chops [1]. If that isn't enough of a vouch, god help the rest of us.
[1] https://www.quora.com/Is-Sam-Altman-highly-technical-Has-he-...
Also, I wouldn't call it a myth. I would call it 'questions around his technical knowledge'.
The best way to answer those questions would be for direct evidence of his technical ability to be shown, not references from mates (just as any interview for a tech position requires direct evidence).
"Elon Musk doesn't know how to code" is my fav. It's as if coding is some sort of mythical and rare skill. A new grad who just learn to code a year ago is able to intern at FAANG, but Elon Musk cannot possibly learn how to code for some reason.
My guess is that they arrived to an inflection point. The company was on the cusp of taking an investment which would have valued it at 80 billion. One of the board members mentioned that self destruction would have been in line with their mission of safety for humanity. It seems like at some point you have to ditch the "we're doing this for the benefit of humanity" act and act like a profit hungry machine with a startup CEO going balls out. In this case, "balls out" won. The board was way too late. The AGI escaped with the creation of the for-profit company.
Would have hardly been a shock that "after an exhaustive search for the next CEO, we have decided the most capable person to replace the interim CEO is low and behold Ilya Sutskever."
The fact even I know Sutskever signed the petition is just another aspect of this Shakespearean drama, Sutskever doth protest too much me thinks.
// nitpick, it's lo (from look) not low
NB: I know nothing about these people and don't track it, but my consistency check failed on this claim based on the flood of news over the past week.