in laws

Does anyone else have in laws that they can not stand?? We told them we were expecting 2 weeks ago and announced it on social media yesterday. Me and my SO have been living together for a year and a half and they have barely talked to us at all and I mean maybe 5 times total. After we told them they showed no interest at all until we announced it on Facebook, since then we have gotten 4-5 different Facebook post about wanting to be a grandma and everything but not one question about the baby or me, to me it looks like an act but my SO won't believe me and thinks his mother can do no wrong. Am I the only one who has a monster in law like this?? 🙄🤷🏼‍♀️