To me the crypto technologies are only one possible application on the Web 3.0.
There are voices, that Web 3.0 is the same as the DWeb - the distributed web. Like IPFS, which might be indeed a solution against DDOS attacks and censoring. [1]
On the other hand, there are people who think that "The promise of a decentralized and trustless future is forever just that: a promise, and in the future." [2]