Serious being what?

Most programmers are "lousy programmers" because most of the are not researchers and have no interest in theory.

I can write in Go or Rust (or anything else given some time) but I won't ever use Rust to write any kind of business logic for my company - and this is what I do most of the time I actually write code.

Why? Because Rust is terrible for the job (at least if we are talking about real life scenario where the job should be done in hours and not weeks)