First of, no you can't infer language preference from a name. The reasonable and well meaning assumption about my name on a good day makes me only sad and irrit

First of, no you can't infer language preference from a name. The reasonable and well meaning assumption about my name on a good day makes me only sad and irritated. And even if you could, I don't know if you actually do it by looking at what you signup form asks me to input.