In the context of how the story goes and how their dynamic is, I think this chapter is meant in a comedic light. I totally understand why people are not condoning Dojin's behaviour but I don't think Fargo meant it in a bad way. Its drawn as a funny couple banter for this story esp
P.S : No way in real life would I condone this behaviour tho. Just my opinion
Have ALWAYS loved him despite the backlash he got over the years. This chapter just solidified my love for him!