AITA for uninviting my father from my son’s birthday party?

There is a HUGE backstory to this so buckle up because it’s chaotic.

My father is twice divorced and has been fooled by way too many fake women in the past three years. He has sent wild amounts of money to these “women” in the form of google play gift cards. (Obviously fake because it’s google play gift cards??) Most recently he has been thinking he’s dating celebrities. Like Emilia Clarke and Jennifer Lawrence. He has even gone as far to ask both of my aunts for my grandmothers wedding ring set. All of these people he talks to on random messaging apps. He has also been drinking until he is black out drunk, falling over things, slurring words, etc. He moved in with my brother a little over a year ago while he was still employed. Shortly after moving in, he quit his job with no back up plan whatsoever. My brother has been struggling to provide for both of them. IMO my brother is WAY too nice. My father has been through three jobs in this time. He works for max two weeks and then quits. As soon as he gets the money from these jobs, he goes straight to the liquor store. He has tried multiple times to convince my brother and I that these fake girlfriends are real. Saying “you’ll see when you meet her” or other dumb shit like that. He even tried telling me that the first fake girlfriend was going to come to the birth of my son and how she “loved him so much”. I immediately shut that down because no.

That girlfriend tried to take money from his bank account which resulted in it being closed. He realized she wasn’t real so went immediately on to the next and current, Jennifer Lawrence.

My husband, son and I live two states away as my husband is military. My son’s first birthday party is coming up soon. My husband’s family and a lot of our friends are going to be there. My father claims that he is bringing this new girlfriend to my son’s birthday party. I told him no, obviously. That we would not allow strangers into our home or in our son’s life. His response to me was “I will be coming into your house with my new girlfriend regardless of what you say”.

I told him my husband would absolutely not allow it. His response was “he wont have a choice”. I straight up told him that he will not be coming into our home and that he is not welcome here. He told me if we don’t accept his girlfriend then he doesn’t accept us as family. I could give two shits less at this point to be quite honest.

He seems to think that he is entitled to my son because that is “HIS GRANDSON”. He has only seen my son once since he was born. Never once has asked about him but pretends to be present on facebook.

I do not want this man anywhere near my home or my family. Especially with his tendency to get drunk and then do whatever he wants. If anything were to happen, it would reflect badly on my husband’s career. My uninvite stands and he is now playing the “woe is me” card.