Does the way your MIL raised your husband affect the way you feel about her?

My MIL made some horrible choices and parenting decisions and in many ways I’ve had to do her job and spend a lot of effort over the years undoing the damage she’s done. I know that sounds pathetic on my part but my husband and I have been together since we were teenagers and even his diet was crazy.. he only ate like 5 things since childhood- chicken, pizza, fries, sugary cereal, and desserts- so when we got married and I started making dinner, it was like having a child that I had to train how to eat. He didn’t even know what some basic vegetables were. She also encouraged his porn addiction by buying him a playboy subscription because he asked her for one when he was underage which is just really really weird to me. Then he was an alcoholic as a teenager (everyone knew it) and she’d buy him 12 packs whenever he’d ask her to... I could go on and on but my question is am I justified to not like her for these types of reasons or am I just a bitch? Because all these things are also the reasons why I don’t trust her judgement and don’t trust her to watch my baby and toddler either. I basically think she’s an idiot. And just to add.. my husband is a good husband and Dad but in my opinion not because of her, probably because of my influence in his life from a young age. And no I don’t think I’m perfect and I know I’ll make my own mistakes as a mother but the things his mom did are over the top in my opinion