He made horrible choices and had to suffer the consequences. Sure society still discriminated against omegas but he really fucked up to end up that way.
I also really don’t feel sorry for him but for ML who was brought into that mess. I understand that if a child was a result of rape, then depending on your beliefs you will have to keep it even though your living situation is horrible. But there are still damned things you can do to prevent the conception of the child like an after pill. Besides rape I don’t think anyone has an excuse when it comes to raising a child in a fucked up environment
Dude, it's not that simple okay. First, omegas in this universe are depicted as being seen as second class citizens, which means they are discriminated against and they are not considered worth more than a mere sex object.
Taeyoon's dad probably had wanted to abort him because living is hard enough on its own but decided to keep him in the end and there could be one among the many reasons for it; such as he can't afford to pay the abortion or the pregnancy has passed the early term (which makes abortion extremely unsafe) or he just can't bring himself to abort his child. Whatever his reason, it's not his fault alone.
Also, you have to know that plan b pills and contraceptives in general ALWAYS has the possibility to fail. It's not a foolproof tool and it's not anyone's fault if by chance it doesn't work. Not to mention there's also probability that he can't always afford contraceptives, he was dirt poor. Even nowadays, women in some part of the world still can't afford contraceptives or didn't have access to it. It's a systematic problem, both in the omegaverse and the real world, and the blame shouldn't be put on those who suffered because of it.
Whenever I see Taeyoon's dad I always feel sad somehow. He has such a tortured life and I can't imagine how painful it was for him to endured all of those things everyday. He's so traumatized by alphas that he got scared of his own son but despite it all I know he always loved Taeyoon and only wanted to do his best for him until the end of his life. I bet he regretted a lot of things and wished things had been different for them. Hopefully he is free from all kinds of pain now and he can protect Taeyoon's little family from above.