Sure, and all web2.0 tech can be built without AWS or docker. But in many cases, they give you a powerful advantage.
Same with blockchain. What now is happening in web3.0 is not that different from the dot com bubble. But it busted, and then a ton of new profitable companies appeared.
Blockchain tech will for sure have many legit use cases, same with tokens and tokenomics.
Will most of the current crypto companies go bust? Probably.
Does this mean that blockchain and tokens are crap? No.