A bit of background...
My DHs parents are toxic. They stopped talking to us when we got pregnant out of wedlock in 2016 and have caused us constant stress and drama since.
His siblings initially took the parents side over it, as they told everyone that we had cut them off. The only 'saving grace' we have had with the family since then is that one brother started a relationship with a divorcee with a child. They went on to have IVF, at which point his relationship with his parents broke down and he came to us completely understanding everything we had been through. We have since supported each other and formed a sub-family i suppose. The other siblings barely speak to us.
The parents always cause drama around Christmas and birthdays and it hangs over us like a storm cloud, waiting to see what they will 'kick off' about next. I did message on the forum a month ago and was told not to bother with them this year and we have actually not bothered for the first time. It feels weird but good. However my husband's brother decided to reach out to them today and this is what happened...
My BIL called to wish them a happy Christmas, and they had some cordial conversation about how hard this year has been and how they should try to start again next year and have a better relationship. All good stuff. Then his parents said "If we are going to do that, there are a few things we want to get off our chest" before proceeding to give him a rant about how bad his wedding was (12 months ago), how they didn't like that they were sat on the second row in the ceremony, how they didn't like the registrar, how they didn't enjoy the entertainment, where they were sat for the meal, or that they didn't get a present. They said that they felt equal to all the other guests but should have got more special treatment as they were his parents.
Bearing in mind that the parents had barely spoken a word to him for 18 months prior due to the fall out around the IVF, never visited him at his new home despite numerous invites, and didn't even offer the tiniest amount of sympathy when he and his wife suffered multiple miscarriages - i was surprised he even invited them at all. But also why have they sat on this for a year and let loose now. What can he even do about it?!
So my question is AIBU to think that even if they did have a point (IMO they don't), why ignore him for a year, and then go into a rant about something he can't change or control when he has tried to do something positive. Is this ever a reasonable thing to do?