I dont even care for this guys logic, he is a total sociopath, he isnt the violent type he is the gross type, what are his characteristics is pretty obvious so i won't talk about them, the important part is that anything that goes out of his is bullshit.
There is no part in his "moral argument" that is plausible, he is just vomiting the same reactionary bullshit that any little shit would spill to explain their actions.
Just because certain words sound good doesn't make them right, just that, he is a shitlord at best and a rapist at worst, for all i care he could have busted his face and ended there. But i dont blame the MC for not doing that he isnt this type of person, i respect that, but he shouldn't let that shittalk affect him.
And all this talk of how he doesn't think that if he will "take responsibility of her forever", this right here is the type of argument people use to justify not helping others and diminish the efforts of others that do. Ayu and Yoshida situation isnt an "A or B" situation, he is helping a girl that is distressed and hurt, he doesn't need to feel guilty of anything because he isnt guilty of anything, sure this is still a sensitive situation but there is no right answer besides what he already did right, that is not taking advantage of her and her not doing the same, what will happen in the future can be dealt when the moment arises it will be difficult sure but more than that is just nitpicking were there is no right answer... life isnt a straight path.