It’s unclear exactly what the limits of such a forum are; if I were to hypothetically respond with a pro-nazi screed, I think that most people here would be fine with me being fired. But there’s certainly a gray area.
I will say that it was extremely short sighted of google to setup such a forum in a public and non-anonymous manner. That was just begging for trouble.
"It doesn't seem right" is one thing, but that's not why it's still brought up 3 years after the memo was written. A lot has gone on in the world in the past 3 years that doesn't seem right that we've forgotten about or didn't hear about in the first place. Damore is used as a data point (in fact, as a central data point) in the thesis that "political correctness gone awry" or "social justice warriors run amok" are problems that rank highly in a list of society's most concerning. I think it's absurd. That this random dev's firing is doing so much work in bolstering this thesis just highlights the absurdity.
Edit: removed a too snarky question.