If you read a lot then u'll see that TJ actually doesn't have much depth, the author just makes him seem more special than those around him. It's psychology. If you write a story with an intelligent protagonist and the rest of the characters are stupid, you'll feel like the protagonist is real intelligent. In this story, the other characters are all pragmatic, o yof course TJ is more of a 'insightful' character.
U're trying too hard to overanalyze this and calling others stupid when these kinds of stories are so simple: eye candy, one dimensional and full of clichés. Why don't you go n find n analyze real literary works instead of reading a stereotypical BL story and expecting others to be as 'depth' as you? Raise your standards, snowflake

Some people are really only seeing TJ as a pedestal to make Su-ah better by making him creepy? You really think the author would do that to her own character who's going to get his own story??? Media literacy is truly lost man. I feel like Yaoi just makes them stupider by the day cause that's all they read.
The latest chapter gave TJ so much depth. We know he's a character who chases after pleasure and we can see that he's never truly loved anyone seeing how he sleeps with multiple partners. He has everything... status, money, and pheromones people would grovel for, so why wouldn't he try his hardest to get with Juhyeok who's different from anyone he's pursued?
While he initially wanted Juhyeok for sex only, it's obvious that it's turned into interest and affection. He said it himself, he doesn't know what the feeling is and he wants to know it feels to be on receiving end of Juhyeok's attention instead of Su-ah. The author didn't draw TJ looking so desperate when he was releasing his pheromones without a reason lmao.
Deep down, it shows that TJ wants something real and Juhyeok is the trigger that will open his eyes. He'll learn the hard way that winning over someone's love isn't easy as throwing money around. That's what he'll learn through a series of trial and error with his future omega.