I get the feeling the author never intended for Su-ah to come across as a rapist or an abuser but...

I get the feeling the author never intended for Su-ah to come across as a rapist or an abuser (unlike in Killing Stalking, for example). They probably just used a lot of the common Omegaverse tropes that usually show up in stories with obsessive protagonists. The problem is that most of those stories were either written years ago, when people had different standards, or were intentionally created to explore those darker themes. Since the author never really meant to address those issues or portray Su-ah as a giant red flag, all the coercive and abusive elements just linger in the background without ever being acknowledged. Personally, that completely ruins the reading experience for me.