This is very true but also so is it true that you can be recorded in public against your knowledge. I think the key is that people know the nature of the system they are using and both the positive and negative ways ofusig the tools the blockchain offers. If you listen to the interview you will hear alena talk about how trezor could be used as a login for all websites a user uses...so i suspect that we have the beginnings already of what is needed to be able to both verify an individual on a chain and also protect their privacy. Hope that answers ur q.
Ultimately it comesdown to each of us how ee are going to use this...