This is why messaging apps need to be decentralized and built on top of protocols that cannot be censored or meaningfully monitored.
Freedom is won in the courts and the legislature, not in the code (although tech is as useful tool for keeping government implantations in check).
(I still use and donate to Signal, but have a healthy understanding of its limits)
Freedom is won through weapons. Encryption is a potent weapon, it can defeat states, militaries. Before computers, it used to be a military tool. It must be democratized, the whole world must use it.