I think the argument is that the set containing people who work with web UIs and the set of people who use Rust/Swift/C#/Go don't overlap very much, and general

I think the argument is that the set containing people who work with web UIs and the set of people who use Rust/Swift/C#/Go don't overlap very much, and generally people aren't going to learn a new stack unless there's an extraordinary external motivation to do so.