It's a new technology because it enables a new human behavior.
With your logic, everything is an old technology.
With your logic, everything is an old technology.
And what is that? Most of what it’s credited with seems shakey at best. E.g. it’s not really decentralized is the vast majority of the mining is done by two or three large groups.
You have to trust the other peers aren’t secretly working together to use a 51% attack.
Bitcoin hasn’t been “deanonymized”. It’s never been anonymous. Some of its value actually comes from its extreme transparency.
That said, privacy is important when it comes to money and there are various ways people implement privacy. Both on top of bitcoin and outside of bitcoin.
I don’t know what 51% attack has to do with anonymity though.