The question to me in terms of memory is, if you're writing a weather app on windows why are you not using C#.

The point of these low/zero overhead languages like Rust is you're in an environment where memory management is ultra critical. The dotnet garbage collector does more than a good enough job for a weather app, likely a much better one than vibe coded .clone() Rust

Instead of oscillating between Rust and 1 GB webview apps just ... use the excellent managed language that exists on the operating system appropriate for GUI applications?