Don't want my baby plastered over social media

Basically my MIL documents everything and I have no problem with it. I have a camera and I love making memories and capturing them and sticking them in albums or picture frames... However, MIL literally posts 50+ pics each day of every aspect of her life. My husband because of this hates cameras in his face and doesn't want pictures of his baby all over social media. I agree with him on this for my own reasons. I believe that while I can control who I'm friends with, I can't trust who she or anyone else that wants to post pics of my child are friends with, and I'm not comfortable with it. When I told her that we weren't going to be posting any pictures of our little one online but we are more than happy for her to take them and keep them for herself or frame them, she pretty much kicked off. She wants to post lots of pictures of her grandchild to show off but doesn't understand that we, as our child's parents, don't want this for our little one until they are old enough to want it for themselves. We told her she may be able to post back of the head shots or cute little hands or something just to basically make her feel better but it doesn't seem good enough for her.

Are we being out of order? No one else seems to have any issue with this is either of our families, and lots of our friends agree with us. I even have one friend who made a point of asking people not to post pics of her daughter online and her own mother in law ignored her and now everyone does it 😪 I just don't want the same happening with us.