Kindegarten graduation feud

So I don't know how many of you are familiar with Queen Naija (singer/vlogger,) but recently she's been getting a lot of heat for not inviting the father of her child to his kindergarten graduation.

So to make a long story short, Naija has custody of their child in Atlanta because the father is completely irresponsible. And as of now, because of legal reasons, he can not leave Houston. She tells him that he can come see his child in Atlanta but she doesn't like the child going to Houston anymore. Cps was called on his many times & the last time his son was in his care, he got arrested and Naija couldn't find her son.

So recently he [their son Cj] had a graduation and Chris [the dad] didn't go and now a lot of people are calling Naija out for not inviting him.

I honestly don't think she's wrong but instead he is. Like how do you not know that your son is graduating?? And why didn't you just show up, you don't need her permission to be at his graduation. Plus he couldn't go anyways! I don't understand why he was looking for an invite from her when he should be talking to his son enough to at least know that he's graduating! Plus, if someone was disrespecting me constantly, I wouldn't even feel obligated to talk to them unless our child was in danger. So I don't think she's wrong, and I think he should be involved in his kids life enough to know that on his own. But what are your thoughts on it?