You can use cloudflare to host a website for your freeware. R2 is a good choice for the distribution of your freeware. Cloudflare has free plan and you basically pay nothing.
...or D? or Go? or Java? C#? Zig? etc they chose what they were most comfortable with. Rust is fine, it's not for everyone clearly, but those who use it produce high quality software, I would argue similar with Go, without all the unnecessary mental overhead of C or C++