Social media

Do you or will you allow family/friends to post pictures of your child on social media? My husband and Myself are very private. I don’t have any social media and he posts on Facebook a few times a year. I told our families I do not want pictures of our baby all over the internet/Facebook. Most accepted it but my MIL is practically having a nervous breakdown. Her world revolves around Facebook. She thinks I’m crazy and being mean. Did anyone else face this problem? How did you handle it?