That's the Chinese approach: https://www.businessinsider.com/china-winter-olympics-app-has-function-block-political-keywords-2022-1?op=1 https://www.businessins

That's the Chinese approach: https://www.businessinsider.com/china-winter-olympics-app-has-function-block-political-keywords-2022-1?op=1 https://www.businessinsider.com/china-winter-olympics-app-ha... Also, having a secret, local wordlist is a challenge. Eg. What is stopping someone from testing every possible one-word message, using the reporting functionality as an oracle?