Because fedoracoin's anonymous feature is very simplistic and relies on a third party. It's basically no different than those bitcoin services where you send them your coins and the pass them on so there is no direct link between you and the other party. So by clicking that box you are sending your coins to a centralized third party that you must trust, because they could just as easily keep your coins and they'd never reach their destination.
This. The kind of anonymous transactions that the community are looking for don't rely on a central authority. In fact, having a central authority for anything goes against one of the main points of cryptocurrency.
That said, TiPS is a much better coin since the community takeover, and I expect the value to rise accordingly, once the investors and crypto community get up to speed.