the last scenes is more of a slap to those that always hate NTR when the netori steals the women but this time is more of an opposite scenario when the supposed MC is the bad guy.
Anyways, this always reminds me of that annoying guy in a hentai site spamming his hate over the genre and criticize like a champ that all of it are already cliché. With only an exception if the story has some realistic scenario that involves some kind of drama and an ending that will satisfy how it would be in reality (ex. getting divorced). Then praising vanilla stories as if it doesn't even bother how cliché and repetitive it also. In short, the bias is real and his more of seeking attention from others that has the same mindset. In addition, he also somehow always questions the ending especially for example, Will the other person know the truth at the end? As if rubbing more salt on the wound.