You’re right this was mostly pre-Khronos. Apologies, I’m not an expert in the history of OpenGL. But I believe he was also talking about the period after the Fahrenheit deal, in maybe 2000–2005. He talked about MS sending people to OpenGL committee meetings and intentionally trying to gum up the process and prevent interoperability. I don’t really know the details, and this is all second-hand and poorly remembered from a conversation a decade ago. So take it with some salt.
They quit the OpenGL board in 2003, and though I don't doubt they continued to be antagonistic between 99 and then I can't see their voice pulling that much weight after Fahrenheit.
Not trying to be rude, I'm sure your friend knew far more at the time than I ever have. Just seems better to base this on provable events so people don't see "my connected friend said..." and write it off as a conspiracy. Microsoft is trying to act as an ally to free software again, and people seem far too trusting of their motives.
