It really isn't mental gymnastic. Copilot, the model, is a program that is a derivative work of open source code. It should be open source.

That is another discussion. He is not claiming that it should be open source - he is claiming it is created to destroy open source.

He is me. Allowing large companies to ignore licenses and giving them a tool to launder licensed code at scale is a significant threat to the integrity of open source licenses.

I didn't claim such a thing, my claim is Microsoft's purchase of Github is not good for open source.

there it is