For example, if you put up a Google Form and asked for people's Ethereum addresses, many will provide the 0xAbc123 version and many others will provide the Abc123 version without the 0x. Both audiences may not realize that the 0x is purely cosmetic and addresses and transaction IDs can be resolved without it.
Furthermore the state could go further and have examples of smart contracts that help trade, business and commerce function well, instead of malicious contracts that undermine confidence in that system. Similar to the role OpenZeppelin has taken with standardized smart contracts. The US Federal Government has created multiple federal agencies before, specifically to provide confidence and order to markets where there wasn't. So just take some inspiration from 100 years ago and apply the same standard here, as opposed to a CNBC article about the value of scams justifying your aversion to this market.
The state could go even further by writing and collaborating on smart contracts, even submitting pull requests or other equivalent contributions to OpenZeppelin contracts or other smart contracts. This would make it easy for market participants to quickly evaluate a smart contract and see how closely it conforms.