Tornado Cash supporters argue that creating code should be considered free speech and that the protocol is simply an Ethereum smart contract designed to provide confidentiality

Quotes that support claims

Tornado Cash is simply an Ethereum smart contract, which mixes the coins, making their origin untraceable. The contract is used for some forms of money laundering, but the intention of the code was to simply provide confidentiality

Supporters of Tornado Cash treat the issue of creating code as free speech