Yea it's kind of funny in a way. Most of them think for every story there has to be a good guy and a bad guy, and don't seem to comprehend the complexity of pretty much every major character in this manwha
I mean there’s no doubt that Sangwoo’s a bad guy but just like with Bum I think the fandom gives him more credit than he probably deserves.
The fact that he’s not been captured yet is like 50% police incompetence 40% luck and 10% actual skill and intelligence.
I don't doubt he's a bad guy, it's just most people view him as the classic villain rubbing his hands and Bums some innocent damsel in distress. I think Sangwoos probably the overarching antagonist but objectively there's really no good guy in this story. Sangbae might be an exception but even he seems more like the classic "wants to be noticed for how smart he is" rather than someone rushing in to save the day
I feel like a lot of the fandom automatically assume that everything Sangwoo does is all in the interest of manipulating Bum. I’m not saying that a lot of his actions aren’t that but I’m saying that Sangwoo is not the devious all-knowing villainous mastermind a lot of people make him out to be.
He’s a really fucked up human being who’s smart enough to not be caught but also just got really fucking lucky multiple times. I swear Sangwoo has escaped discovery more times out of sheer luck or coincidence than he’s escaped because of his wits. He also seems to have gotten a bit cocky and overconfident after escaping the police but that might just be the alcohol talking.
Honestly I think a lot of what Sangwoo does to Bum really comes down to the fact that he enjoys fucking with him. There’s obviously more to his feelings than that but that’s what I choose to attribute a lot of his actions to.