They are learning at a new job anyway: the code base, tech stack, and social constructs that contributed to these. Learning the syntax and idioms of a new langu

They are learning at a new job anyway: the code base, tech stack, and social constructs that contributed to these. Learning the syntax and idioms of a new language is the smallest thing in most cases. Unless the language is particularly esoteric I submit that worrying about the "mess" made by learning it is hardly worth considering compared to those other things.