Irori, in His godhood as in his mortality, is not the kind of martial artist who goes around cleaning up others' messes; he is the kind who cleans up his own. He is Lawful Neutral, not Lawful Good.
This is how Irori was in life:
A starving beggar girl is not his own doing, and he may walk on past her without qualm.
If the starving girl begs a gold coin from him, and perchance he gives it to her, and later she is beaten and killed for it, that is also not his concern; she made her own choice to ask. She was too young to know what she did? What of it? All mortals are too young in the end.
If the starving girl begs a gold coin from him, and instead he foolishly gives her a ruby he feels he has not himself properly earned, thinking mainly of the consequences to himself but not to her, and this starts a chain of events in which the girl is kidnapped by a criminal king and interrogated to find where the ruby came from - then there will be one less criminal king in that city before the next day's dawn. Even if he is young enough, back then, for that to be a dangerous fight, he goes to it without hesitation. It is not that he is protective; it is that he is responsible.
In godhood Irori cannot afford to be so strict with Himself. His actions affect too much for too many. But Irori is still the god who grew out of that mortal - not by being ascended, but by doing it all the hard way.