I'm absolutely for this proposal.
I remember not long ago, a new user posted a cryptocurrency-related question and got closed. They accused us of attempting to rank high on Google search and demanded (according their own words) "re-add" their question.
I wonder if there's a way we the community members (especially moderators) can, in general, dis-relate Crypto.SE to cryptocurrencies topics on various search engines.
Also, I suggest adding to the wordings, "legal aspects" in the close reason, like this:
Questions about non-cryptographic aspects of cryptocurrencies are off-topic. This includes financial, economic, and legal aspects as well as questions about the usage or non-cryptographic operation of surrounding tools, websites or smart contracts.
2024-04-03: It's been some years, do we still not have any progress?