I think at its root the problem is copyleft is a mirror image of copyright. It relies on and replicates all the cultural and legal requirements and constraints of the copyright model and curtails an imagining of other possibilities. Every sentence or thought spent on copyleft is misdirected in my view.

Which is why I find Microsoft doing this (potential) en-masse license violation and then a bunch of GPL folks getting mad pretty funny overall. I just find the high and mighty tone annoying, like sure, they've (allegedly) screwed you, but they're going to (theoretically) get away with it because they're rich and powerful, sorry that didn't turn out how you wanted.