Any non contrived example would be thousands of lines of code. Rust is meant for those areas where you are forced to do weird things, it does it's best but they don't know how to solve the problem of what they need in a way that can't be misused.
Seeing how contrived the examples are makes me more interested in rust.
I use it professionally, and can say: it's worth it. Even the warts are minor compared to how polished and intuitive the language feels after you accept it's dogmas (or die fighting against the borrow checker).
The error messages are very good, cargo is awesome, rust analyzer is already good but still needs some time to flourish, and the performance in production is really predictable. It's for sure not perfect, but in many aspects it feels like a step forward, so much that sometimes I'm wary on how much I'm relying on the compiler to check my decisions for me.
Seeing how contrived the examples are makes me more interested in rust.