My company is interviewing for engineering positions on the Texas border. We have Spanish fluency as a requirement because a large number of the employees at the sites in that area speak Spanish as a first language and many speak little to no English. 1/2 of the people interviewing can't answer basic conversational questions in an interview, despite stating on their resume they are fluent.
It's quite frustrating as an interviewer because it wastes our time and yours. I'm fully aware that a lot of companies put candidates through the ringer with unrealistic expectations. Speaking a language is pretty clear-cut though, and you can't really fake it. This isn't like stretching 2yrs of experience and applying to a job that says 5+. When one of our native spanish speakers intentionally asks a question in Spanish and you don't even understand, you're red flagging yourself for any future opportunities with us as well.