Your argument is refuted by the fact the technology to solve the problem you claim will never be solved literally already exists, one version of which has a market cap of almost $10B.[1]
Claiming that a very obvious engineering problem incentivized to being solved is the same as imagining us being incentivized to regress in the way you mention is also weird.
I presumed you were using “blockchain” as a short hand for “distributed fault tolerant system that solves Byzantine generals problem.” If not then I agree blockchains in the literal sense probably are a transitional tech.
Claiming that a very obvious engineering problem incentivized to being solved is the same as imagining us being incentivized to regress in the way you mention is also weird.
[1] https://www.avax.network/