I've written code for pay for over two decades in a variety of languages and on a variety of platforms. I can say if I don't wish to write code into a Google Document, nothing misguided about that. Someone fresh out of school, maybe, even then, most coders are using an IDE all day or have another window or terminal open so we can do a quick compile sanity check so even for a new coder fresh out of school, this makes no sense.

You should be able to write code with half-busted crayons on the back of yesterday's newspaper, also. But it's much classier (and time-efficient) for all concerned if the employer provides at least ballpark-adequate tools upfront (meaning at the very least an editor that doesn't overtly work against you -- like Google Docs does).