https://element.io/blog/us-shows-the-risk-of-running-a-government-by-signal/
TL;DR "Signal, whose double-ratchet algorithm we stole and implemented badly[0], is bad actually. but we're good. please governments, plan your bombing of Yemen on Matrix and do so by paying an extortionate amount of money to a rapidly failing company who wrote all the software but still cant adequately administrate it due to its unpredictable resource usage and extreme amount of bugs. bugs that may become CVEs later"
[0]: https://www.theregister.com/2022/09/28/matrix_encryption_flaws/