I believe you're making this claim because _some_ crypto proponents believe "code is law" and because your personal logical framing is that web3 has no value add outside of being able to operate without legal recourse thus it must operate without legal recourse.
First, even if web3 had no useful value add, it doesn't mean it ought not exist. I can create a SaaS company that does exactly the same thing another company does just with my own logo and API documentation. Does non-uniqueness invalidate my company's existence? What if I forked an open source SQL database and slapped my name on the repo? Have you heard about something called substitute goods? I don't see why Pepsi can't exist in a world where only Coke is the norm.
Second, web3/blockchain/defi does have benefits outside of traditional web2/finance. The ability to not require depositing your funds into an account to transact on a protocol, for instance, is a clear value add. The ability to buy/sell NFTs without a middleman (if they choose to eschew a middleman) is a novel and potentially valuable value add as well. There are countless other applications of web3 that I won't delve into but these concepts can and should operate within bounds of legal recourse.
