"Mrs." is falling out of style. I kind of get it. "Mistress" is a loaded word, if you think about it.
But when Mrs first stood for Mistress, the word Mistress wasn't "loaded" at all.
If an abbreviation is never expanded, is it still an abbreviation? Personally I think it isn’t; I advocate for condensing i.e./e.g. to simply ie and eg, though this is a minority opinion.
Only in English.