By definition, cynics are validated in a bear market. That hardly substantiates the claim that the space "needs to be destroyed", nor does it consider the reality that it's here to stay in one form or another.
Instead of screaming murder from the sidelines, maybe it'd more instructive to provide a list of ways that the space could be improved.
It can't be improved, since crypto has failed at absolutely everything it has tried to improve already.
Too volatile to be used as payments.
Not even decentralised (Bitcoin, Ethereum, etc.)
Not a store of value or digital gold.
Not a hedge against inflation
Most 'DeFi' applications don't have any actual usecase.
Stablecoins aren't even stable and have in fact crashed.
And there is no real usecase for blockchain, crypto, web3 or whatever that improves greatly of what the current system has already.