“Mrs. [Husbands firstname lastname]” is a pretty dated form of address. I feel like I don’t see that a lot anymore. Except in very formal situations and from people who don’t realize it’s out of style. It’s also seems to have become more acceptable to refer to all women as “Miss/Ms.” Regardless of her martial status. I sincerely doubt the address mistake was meant to be offensive.

One thing I do find infuriating is the fact that it in numerous states in the US, it is much harder for a man to take his wife’s last name when getting married than the other way around. A woman can mail a form and a copy of her marriage license to the Social Security Administration and get the DMV to reissue her driver’s license. That’s all it takes.

A man often has to get a court order which I think is very discriminatory.