Template languages are meant to change a lot less than programming languages and adapt when they do. I see companies using programming languages like this and then in a year the libraries are no longer maintained, they have some churn and their new employees then want to rewrite everything. I rarely think it is worth writing CI/CD in a programming language unless you are committed to supporting it for its lifetime. Most companies will not be able to and they'll end up back at the standard templates sooner or later.