So my child's father texts me saying pretty much none of his family is going to come to the baby…

So my child's father texts me saying pretty much none of his family is going to come to the baby shower and that that's what they verbally told him. It definitely kind of sucks, but part of me is more upset for him even though he can be an asshole a lot of times, and his parents have issues with some people in his family and can be petty and stuff themselves, they are always dragging him to all his family's functions and I know that there are people who showed up to his 21st birthday party last year that are included in those that say they aren't coming to the shower which is a bit of a slap in the face to me more than him. I know there are people who can't make it for real reasons (booked vacations, leaving for college, etc.) but I know for a fact that not all of them have legit reasons especially when the shower is going to be late July-early August. I, as well as my family, are going to be putting most if not all the money, time, and effort into this shower so I told him that if they're not coming and want to act like this now that's fine but don't do any wishy washy mess and change their mind last minute because once there's a final headcount and a booked place and everything is planned out that's it because nobody's spending extra money just incase they change their mind; and I told him I don't want to hear any foolishness or want any involvement from those who have not been there or supportive once I go into labor and when the baby's here no matter what because I don't have time. I've been nothing but nice to all of them, I've always been respectful, I've never stepped out of line, I'm always nice and kind to them and greet them with a smile and talk to them, and some of them don't even actually know me, they just know of me as "Josh's girlfriend" no name, no face, just that I exist, so it's a little frustrating, but I know I have a decent, supportive group of family that will come through on my end and I know that his most important family will be there; here's hoping those that do decide to come can actually be respectful and responsible, and if it isn't too much to ask, adhere even slightly to the registry (even though I'll be grateful for every and any gifts I get for my little nugget).