??? Android crash little things left and right, and have leaks just for existing.
I did a quick look on androidxref and saw a lot more .rs files than I expected. I haven't worked in Android frameworks stuff since around 5.0. I knew not too long after I left that world they started adding some minimal rust stuff, but looks like its grown a bit. Exciting. It's a perfect fit.
That's probably a major reason. But, Rust is also just a really nice language that's very pleasant to use.