> The thing is that there are enough frontends using this smart contract where you can simply chose 'WETH to ETH' and you'll get the right transaction. For whatever reason this person thought it'd be a great idea to interact with the smart contract directly.
Getting out of the supposed user-opacity of legalese to something that was safe and reasonable for a non-elite-priesthood users to understand, trust, and interact with directly without an intermediary was, I thought, the whole allure of smart contracts over using the old-fashioned dumb kind to manage transactions and business relations.