I was wondering about this as well. I did think that the advertisement was sexist and made the hackathon seem exclusive to men. I don't know whether this incident was just an isolated bonehead move or it reveals incorrigible bad character in the people involved. I can see it either way depending on how I stare at it, but I don't believe I have enough data to make a firm conclusion. I don't have a pressing need to do so, so I will probably just leave the question unresolved in my mind. But for the people that have made firm conclusions, it seems like the apologies make no difference.

I would ask people that are unsatisfied by Sqoot's apologies: Could they issue any apology that would satisfy you?

We are supposedly talking about how to apologize and whether they can/should offer a better apology. But if nothing can change one's mind then we are really talking about whether the offense is forgivable or not, irrespective of the content of the apology.