Maybe it was a mistake. But I'm not really sorry since only leftists were accidentally insulted.
There's one for the hypocrisy list.
An honest person would have said "Sorry, I was wrong." There's no "maybe," your statement was not only grossly factually incorrect, but used in a derogatory fashion.
And an honest and smart person would have looked it up first before writing it. The ONLY place info like that comes from is anti-OSS FUD, agenda-driven and no better than Stallman himself.