Since the project literally has "Rust" in the title, I'm curious - do the authors view Rust as being particularly suited to this kind of project?

From a quick glance it looks like the heavy computational work is done in OpenCL kernels. Typically, such projects are either written in Python / some other flexible high level language for the easy metaprogramming or C++ if a high performance CPU fallback or tight CUDA integration is desired. I've tried out Rust in the past, but decided against using it for my own computational projects because it didn't seem to offer any significant advantages for this type of work and I didn't enjoy the extra hurdles it imposed. It'd be interesting to hear an opposing view from other computational scientists.