Then they can have all your information. For example when the police say they are paid with stolen bitcoins, they can trace you.
Haha, don't bribe the police and they won't be able to complain that you paid them with stolen bitcoins.
It's OK for you all to be pissed at Coinbase. Your ongoing frustration is a waste of your time. It's similar to you saying "Fuck fiat currency" and then continuing to use fiat currency when digital, decentralized currency exists.
If you're not willing to do something, some action, your bitching is worthless. There are MANY alternatives to Coinbase...use them. Promote them.
Let's turn this frustration into productive discussion, what alternative to Coinbase provides the same easy of liquidity without the information sharing requirements?