How is it in any way appropriate to bring up miscarriage on someone's happy and healthy pregnancy posts?

Seriously? Stop! We all know the statistics we all know the risk you don't need to get onto people's posts who are rejoicing and telling them they could miscarry in the second tri, they could have a still born etc. It's so beyond inconsiderate. No one gets onto miscarriage posts and talks about "oh gosh I'm so happy my pregnancy is completely normal and I'm going to have a healthy 9 months!" Because it's rude to do so. Leave the happy women alone.