It is also very obvious. I think he is participating willingly in many occult rituals. He is also the dominant one in the group, the way he casually disrespect others and shows his temper. He is definitely relying on something and it is working. Extra group projects, having more creative control in their music etc.
He has also being the one who wanted this fame this most in that group. He has been a trainee for a long while and changed company. That sort of man will do anything. Anything to succeed. He also had plastic surgeries to look more feminine. He is very ruthless and will participate in the game as he long as his desires and goals is reached.
I sometimes think this group is very special in Hybe. It seems like they are designed for other uses. Music is just a front cover. This group is there to challenge many social norms more than others.
A lot of people have said it's his special group. He uses them to experiment. I used to be heavily into the occult and they use a lot of hand symbols, movements and the way they arrange themselves during dances, that remind me of that.
I hope he leads then away from witchcraft but I don't see think so. Watch their hands, especially Bg, Yj and Sb. Watch how they move during dances, and any symbols in their video and their clothes. Skz does it too. That's a good way to raise energy. Successful magick isn't just words, ingredients and correspondences. There's a lot more but I don't want to attract certain people to my post.
I've spoken on Yj before, and agree with what you said. He was almost too old to join. Their choreography and performances center him usually. He's had more opportunities than the others, and has many credits on songs.
Fans were pushing him as an it boy long before now. He's considered moas first love because he was revealed first and he has that something special. He's yelled at members for talking when they were discussing his writing or rap during the last album. Even Sb defers to him. That's why he couldn't be leader; he has too much power as it is. Being leader was Sb's consolation prize.
I can post more on my experiences with the occult as they relate to kpop and specifically hive groups but will try to remain somewhat vague for my own safety.