Any address can be tracked easily. But the owner of address is anonymous. At some extent it is still anonymous. We can generate as many addresses as we can to receive BTC instantly with no one knowing the owner.
Yeah that's part of the pseudonymous nature of BTC. One doesn't know for sure who's the owner of a specific address. But even if you figure that out, one can pretty easily just use another address and thus remain separate from the first one!
Using multiple adresses and shared sends and mixers does remove that.