We used to flag "this post is not written in English on English Stack Overflow" as "unclear what you're asking."
The new verbiage doesn't really allow for that interpretation:
Needs details or clarity
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question.
Not sure if we want to touch this/what we should do here.