It’s hard being a parent.
Ayato was an asshole and he also did something completely unesscary. He also gets treated like an angel even thought he beat the shit out of touka for stupid reasons. But kaneki wants to preach about kindness and all that but he beat Ayato for himself beacuse Ayato hurt touka when he should be caring for her. Kaneki could have kicked Ayato ass without leaving him a pile of broken bones. I'll admit kaneki was not in a good state if mind especially at that time.