If I download offline software and opt out of any sort of online registration or reporting I would hope it wouldn't even report my opt out. I don't want it to go any calling home.

The key that people are missing is CM is trying to get this info to make the best directional decisions possible and those that opt out are left out of that conversation, but they probably are aware and okay with that. I say leave them out.

Demanding opt-out for something like this is a broken way of looking at it and is, fundamentally, sleazy. Opt-in is the only justifiable strategy.