Is it normal that i hate my bf’s cats?

My bf and I have been together for 7 months and he has 9 cats and they are overwhelming to be around. They jump all over everything and destroy anything in sight. I understand that this is what cats do, but I just do not see how someone can be okay with all of this. He also has 1 inside dog and 5 outside dogs. Never in my life have I met anyone with so many pets. Whenever I try to talk to him about it, he just brushes it off and does nothing about the situation. Sometimes he thinks it’s funny when his pets are misbehaving. His pets are not clean and he lets them sit/ lay on the kitchen table, the kitchen counter, and they sit on the refrigerator. Sometimes they use the bathroom on the kitchen floor. To be honest his house isn’t that neat either, and it’s a little small. I feel like he doesn’t have enough room for all of them but keeps them anyway. Most of his pets are in serious need of medical attention but he says he can’t afford to take them to the vet? I don’t understand how someone can have so many pets and lack the resources to take care of them. Whenever I mention this he usually gets upset and tells me to shut up. I broke up with him a few times because of this and he says it’s superficial of me to do this because of his “lifestyle” I think I may have to leave for good because I shouldn’t have to deal with it and I don’t want him to feel as though he has to choose, even though we all know he’ll choose his pets. Someone suggested for me to poison them but I can’t do that, it’s wrong and I know how much they mean to him, my only option is leaving him for good this time. Is this normal for me to feel this way? Also any advice on the situation?