Actually almost all of your transaction is traceable in bitcoin. The only thing that they cannot do is to retrieve their lost coin if someone scam them using beautiful words. That is the only problem if the currency that you have is decentralized. No government is involved and you cannot complain if something happens to your money whether it is stolen or sent to the wrong address.
Yes that is quite correct but still, we could not trace the actual identity of the scammers because what we could just trace is the transactions that they made. Basically they will not submit a true KYC knowing that they aim to scam people out. So, it will be a big problem for us so we need bitcoin to become a traceable currency and at the same time, deep inside of us don't want it either. Because one thing we are here now is because of the characteristics bitcoin has, and being anonymous fascinated us.