all of bitcoin features are still true and none of them have changed.
- it is still decentralized
- secure
- cheap
- not anonymous but keeps your privacy to some extent.
- and you can still use it for payment even more so than before since there are much more places that accept bitcoin.
I agree with you, bitcoin didnt lose any of its features through years, the only really significant change is raise of transaction fees, which went up a lot: but bitcoin is not a tool for sending 1-2$ but more.
I think we might call bitcoin an anonymous currency, the reason of this is that we dont have any kind of colleration between the wallet address and the user identity.
You can track bitcoins, but if you stay cautious and do everything alright, nobody will get your sensitive data, such as name,surname, place of birth, address, etc.