The real problem is that most consumers just don't care about privacy at all.
Losing the 0.01% of people who care about their privacy is no incentive for manufacturers to change their shady practices.
It would be nice to have some kind of privacy certification, then consumers could have an easy way of knowing the product they're buying respects their privacy.
It's a sad state of affairs that this would be needed to buy a set of headphones.
