Wrong question. From the behavior of the board this weekend, it seems like the question is more "Do you understand how he was fired?".
IE: Immediately, on a Friday before Market close, before informing close partners (like Microsoft with 49% stake).
The "why" can be correct, but if the "how" is wrong that's even worse in some regards. It means that the board's thinking process is wrong and they'll likely make poor decisions in the future.
I don't know much about Sam Altman, but the behavior of the board was closer to a huge scandal. I was expecting news of some crazy misdeed of some kind, not just a simple misalignment with values.
Under these misalignment scenarios, you'd expect a stern talking to, and then a forced resignation over a few months. Not an immediate firing / removal. During this time, you'd inform Microsoft (and other partners) of the decision to get everyone on the same page, so it all elegantly resolves.
EDIT: And mind you, I don't even think the "why" has been well explained this weekend. That's part of the reason why "how" is important, to make sure the "why" gets explained clearly to everyone.