Maybe worry less about languages. All through my career I've seen remarkable applications written in languages people heaped derision on, or were less than perfect in some way or the other.
> Why should someone who contributes to the development of the language specs themselves "worry less" about languages?
Why not spend time solving different problems and then go back to languages? Why must one dedicate their life to a single field of expertise? The author was doing devops (with golang and kubernetes - the article is worth a read just for his take on kubernetes) work and said it was more rewarding than his work with C++.