But have you considered the countless lives that were lost due to bugs from memory-unsafe languages over the past ~70 years? A murder-for-hire app in Rust would still cost us less lives overall, if it increases the popularity and adoption of memory-safe languages elsewhere. It's a just cause, one could say.
I, for one, am very happy with how the assassination story of Rust is coming along!
I think it would actually probably hit the top spot if it was a legitimate attempt that used crypto, E2E, provable security, maybe TOR. There's only one example in history AFAIK and it only lasted a short while. https://en.wikipedia.org/wiki/Assassination_market
At least i would hope...