- Incase you've been scammed you can track him. (But you it needs a lot of work)
There are many big scammers that are completely impossible to find them. For example if you get hacked, you can do nothing.
- They can track you using your transactions via Blockchain
You can use different addresses. It's easy deposit your coins to an exchange. Then withdraw it to a new address.
- The transaction is not that much anonymous
It's completely anonymous. No third party will know sender and receiver.