The goal here was to get the binary size to be small enough, not the smallest it could possibly be. The tool was written in 2 hours because I used a language I was proficient in. While I love me some Rust it would easily double if not triple the time it would take me to build the thing in the first place
If that's the real Jake Wharton, I have to say I am a big fan of the tools/libs (and their quality) you wrote for Android. They were especially useful 7-5 years ago, when the "official" libs were pathetically crappy :).