Well, the author herself doesn't baby him, so... I think that's exactly what makes Seth a well-rounded character instead of even remotely close to a "tragic backstory! Mary Sue (or Gary Stu) character", and what makes it still very worthwhile to stick around and see where the author of the story wants it all to go... (which, if I'm not wrong, it's probably is probably towards atonement and redemption... all the more reasonto say Seth is NOT a tragic! Sue). And I'd say that, in this kind of thing, the author's POV is the one with the final word... *shrugs*
Jojo dear: Seth violent actions toward humans, Anubis and Nepthys are the direct cause of Isis' curse placed upon him. His desire are to love his son and wife. Isis made it literally impossible to have his family back. The curse makes him want to harm and kill Anubis. He literally has no control over that, and it drove him into madness. And to prevent himself from actually doing the irreparable, he just deters it wherever he can: on humans.
It is also the reason why he can only be himself and shows his love when he is under the influence of drug and alcohol: when literally the curse as less control on him (resulting in the part where he met Horus for the first time and his unknown curse on the boy.)
Yes, he did wrong and will be punished for that, but a lot of his wrong were done because he was cornered due to the curse. I think to him, it was a better option than succumbing to the cursed urge to kill Anubis (which by the way is how he is supposed to lift the curse. For Nepthis is to accept to live, for Osiris it is to give up on Seth and for Isis it is to give up on her revenge. And none of it is impossible.)
The story explicitly explain it, after Anubis tried to attack his father with the sword he offered him, which triggered a violent reaction from him. Seth beat Anubis, but bruattly stop himself them went to Kemis where he was normally hoping to find Isis, but instead killed all the Boys that where there and then get himself drunk for several weeks. This is when he met Horus. He killed the boys because he almost killed Anubis due to his cursed (and Anubis chocked by that went to Duat). In the flashback you can see the horror when Seth realized it, when it almost happens then: boys slaughtering and full on despair drinking session.
Even Anubis understand it when he learned about this by Horus. He even asks, in the comics, his father why he has urges of killing him.
The curse Isis put on him has for core component his love for his son. Since it is what Osiris used against him to have him slept with him in exchange for Anubis soul. The curse prevents Seth from demonstrating his love and attaining what he desires the most. Rendering him an abusive father, violent and destructive. And it is obvious from how Anubis reacted when he confused Horus with Anubis, that in fact, when the curse isn't triggered, he deeply loves his son and that his violent new personality is absolutely not how he truly is.
It's been shown again and again that Anubis knows and understands nothing about what's going on, and he's the one of the main characters that knows the least about what happened. If you don't understand that about Anubis, then you don't understand his character.
Again, if you think Seth wanted to kill Anubis and that's why he killed the boys in Kemis, you got it wrong: he killed them out of frustration because he saw they weren't Anubis. It has been stated several times Anubis can go undetected by the gods because he isn't a god himself, which is why Seth knew he would never be able to find him and asked the humans to bring him kids of his description to see if the humas could find his son for him, but all they brought him were other kids so Seth killed them out of frustration, NOT because he ever wanted to kill Anubis or to get rid of the wish of some urge to kill Anubis.
I don’t even really know the plot anymore. Honestly no is a victim everyone is bad let’s just end it right there. Even though Seth went through stuff he still bad and not a victim. Horus idek about him same with isis. Um Osiris we know about him being a bad person. Honestly they all need to die. Anbuis idek know about him too. I’m confused. I’m not a Seth anti l, but I dislike him and Osiris the most .