They used the contract in a way no one who wrote or entered into it intended. When a contract isn't serving the people bound to it there's typically the option

They used the contract in a way no one who wrote or entered into it intended. When a contract isn't serving the people bound to it there's typically the option to rewrite it when all parties agree. The only party that disagreed was the Eth classic community, and they still have a coin and codebase with contracts credible by your unusually high standards. The only thing they lost was investor sentiment. If those standards prove to be advantageous for a group to operate under, they'll gain ground over time. That's the beauty of crypto - people can decide the protocols and community they prefer in real time, and vote with their money accordingly.