I think you are focusing on a bit artificial things here with things like intentions and other biases and notions.

Swift is a statically compiled, C like language, that can be used for system programming. Just like C, C++, Rust, Go, etc. This is not an accident. It was built from the ground up to do that.

The goal with this OSS library is literally making swift easier to use in projects where you'd otherwise reach for exactly those languages. So, whether you like it or not, it's competing (or at least trying to) in that space (i.e. system programming). Actually, Swift was designed to replace Objective C, which of course was the system programming language that Apple standardized on as an alternative to C decades ago. It's designed from the ground up to be a drop in replacement in any project where you'd previously be using that. So, it's a natural fit for any kind of project where you'd otherwise be considering things like Rust, C++, Go, C, etc.

Whether that makes sense or not in your context is of course up for debate and highly subjective.