If you pay someone with Bitcoin you also have privacy issues.
Discussion
That's why collaborative transactions are so important - I remember someone tracing back through the chain from a tx I sent them once saying to me "I didn't realise you'd received that much"...which was a pain, but I got away with it by telling them they'd gone to far back and that was never mine.
The underlying problem I see is that Bitcoin developers are not interested in privacy, it would be very naive to think that Bitcoin developers are no longer under the influence of some three-letter agency.
There's a definite argument to be made for focusing on privacy in Bitcoin, once we exit fiat rails altogether though it'll be kind of moot, since that's the only place they can really screw us. Once the coin is just moving from one party to another and never going near an exchange there's next to fuck all they can do without putting in serious effort, which would make people aware of what's happening anyway