Responses

Im with you, I think I might be missing things too but no. Nope! I get that they are family and good for them they don't hate him, but I think its still to early for them to really forgive him. Its good he realized he's been an asshole parent and husband but thats only step one. He hasn't done enough to redeem himself.
Honestly, I'm kinda pissed at the whole Todoroki family.
Endeavour has done so much shit, he abused them, yelled at them, used Rei as a subject to create children who are suited for overcoming All Might and tossed them away when they weren't useful anymore. He even drove his own child into madness because of his lack of empathy and human feelings in general.
And now, Rei just suddenly forgives him for abusing her AND her whole family in such a brutal way. What has Endeavour done to make him atone for shit he did? The only thing I remember is that he realized what a shitty Dad he was, but that is no where near enough to make it all up.
It could very well be that I am missing something, but with the things I remember it just doesn't add up. And him being the only one who's able to beat Dabi is in no way a good enough reason to help him.