not true, I have lots of experience in PHP and if I write code in go sure it will have more bugs than my PHP implementation. how familiar are you with your current stack matters a lot. Also, That does not mean you should use a runtime where 100 things can go wrong (talking about node).

if the goal is to maintain an application and catch issues at compile time. go with a better type system Haskell/Ocaml/Rust.

Another option would be to use generative testing where you have tight control over what gets in, for example, Clojure/Spec.