Now that you mention it I think this is a new trend. I pretty sure I've seen more "written in Rust/Go/Zig" than any other language out there. I've never seen a post like "new cli, written in C++" for example. I don't know if it's just some kind of tribalism or a way to attract talent to your project.

I think end users don't give a shit about the tech stack of a software. Why would they?