I would say it shines when you have systems constraints, for example embedded & robotics work well with Rust. You cannot have a GC (either you don't have a heap

I would say it shines when you have systems constraints, for example embedded & robotics work well with Rust. You cannot have a GC (either you don't have a heap or you cannot tolerate a GC pause resp.) but you still have the benefits of a good functional programming language to write your algorithms in. The benefits are less obvious if you have less of those constraints: go is way way simpler to write large codebases for cloud applications in and still provide an excellent concurrency support. Python is way better for experimenting.