If bitcoin were really truly anonymous in 100% It would be great, but there are ways i.e blockchain to track your coins. While it does not show you directly your location or name it can be tracked. But it is still better that credit cards or other online payments method
That is why you need to differentiate 2 things: anonymity and privacy. Bitcoin is fully private on every level (no one knows who you are), similar to paper FIAT.
But bitcoin is not fully anonymous (every transaction is stored in the blockchain). It can be however when certain conditions are met (i.e. every transaction with new address).