[k__]

True.

For most projects, it's good enough.

Also, I worked for many shops that had a two language policy, one for development speed and one for performance.

For example, PHP and C or something.

They had many PHP devs and a few C devs and would write anything new in PHP and then later replace the few performance critical parts with C implementations.

I thought about doing this with JavaScript and Rust in my projects, but somehow I never got to the point that JavaScript became the bottle-neck.