There's plenty of software I work on from time to time that's written in Go which I'm happy are written in Go. Some of those were even projects which I started and chose the language for.

Then there's software I've been involved in where I believe Go was the wrong choice. And software not written in Go where I believe Go would have been the wrong choice.

My point is, Go is just another programming language, with a unique set of strengths and weaknesses, and there are plenty of cases which i have experienced myself where there are genuinely no regrets around picking Go. Not because there aren't shortcomings in Go, but because there are plenty of cases where those shortcomings don't matter.

In my professional life, I have seen significantly more regret associated with choosing JavaScript on the back-end than with choosing Go. But then again, there are services in production written in JavaScript where that just never has been an issue and there are no regrets.