I'm married to a nonbinary person and not even they like "xe". It's definitely weird to use it for a cisgender person who has never expressed interest in being referred to in that way. It's usually done by people who are trying to normalize the use of "xe/xer" pronouns for everybody, when the fact of the matter is it's clunky and will never catch on, and I've yet to meet an agender person in real life who actually uses those pronouns.