> All closed technology, on some level, may be used to perpetuate coercion.

Maybe this way?

There are surely many examples of closed technology that isn't phoning home. The problem is that you don't get many garanties.

I don't think coercion is necessarily limited to phoning home.

I think that's a rather extremist view.

It's also true. Even at the most benign level, non-free software exists to coerce you into running unverifiable code on a machine you own. Less benign non-free software coerces you into paying for a license, signing an EULA, participating in a botnet, etc.

have you read his profile?