People don't care about their privacy. On Bitcointalk there is a good example, you can see a good number of users praising privacy tools, currencies, and so on but they gave any personal info to exchange platforms for a few bucks, like coinbase that give $10 for I don't know what apprenticeship program. Even selfie, I'm sure if they ask their underwear size they will run to give it too.
It's no different than when you see them saying Bitcoin needs regulations for the mass adoption, I start to see them now crying because Bitcoin is being regulated here and there.
I find it ironic considering Bitcoin is a tool that gives us the ability to remain (pseudo) anonymous.
Can you clarify what giving out personal details for BTC mean? I mean, if someone were to give me BTC just to know my personal details, let's say name age, I'd go for it. Heck, we already did KYC to exchanges so that they could allow us to trade BTC to them and from them. But there should be a personal limit to it. Let's say, my address is off limits, my Birth certificate ID is off limits, stuff like that. You know, information about you that could be specifically used against you, or could be used to take advantage of you. Plus, there'd have to be a legal document stating that the usage of my personal information would not conflict in the boundaries of the law, and would only work with it, not against it(law).
It's not only about trusting a 3rd party and to be afraid to have your information sold/hacked it's also about Big data.
It's like with the loyalty card programs from the supermarket, they can know you and your family better than you. They know when your wife has her menstruation, they know what your children eat, how many showers per day you take, etc, etc. You can imagine a lot of stuff