He isn't weak though. Considering the fact that he became an awakened not long ago, his progress is already immense. And it's not like just because he gained force control doesn't mean he'll eventually master how to use it all at once. He's incredibly young if you compare him with all the disciples that's trying to compete/fight with him
for you it may be fine, but considering the circumstances, resources, and the powers he got through the chapters already compensates the late awakening. it just seems to me that his growth is too dragging knowing that very powerful force controls were bestowed to him while his opponents only got the one bestowed by their masters. That's how I feel.
Of course I'd have high expectations. It's the writer's fault for giving him too many force controls and he still lacks the ability to manifest them or use them that much in the latest chapters. If he wasn't bestowed many "force controls", which I think was the target of other top ten by the way, then I wouldn't be expecting this much from him.
Dude, the force controls given to him is not complete, only the basic like healing himself and strengthen his body unlike Kayden's full force control, if you read back you can definitely see what they say like kartein's force control given to jiwoo it can only heal himself slowly but can't help heals other and Pluton and the old man's force control is only to strengthen his physically body and his priorities to practice is the force control of kayden not everyone else force control that's not complete and only used as support for him kartein and Pluton even say that he should more focus on Kayden's force control than using them all. (they say it when he was practicing for his duel with the top 10 deciple the one who has a crush with noona too the blond one)
Your expectations aren’t just high, but unrealistic. It’s been ONE YEAR. Don’t you think „more force controls” = „more time”. Think logically, if someone learns from 3 masters 3 different martial arts styles, do you think it would take them longer or shorter to master them than someone who is only focusing on one? No matter how you look at it, it’s just a stupid argument. There’s plenty of overpowered characters, if you like that then just be upfront about it. I like overpowered characters too, but your reasons for calling Jiwoo weak are just absurd.

I'm starting to hate how weak he still is when he has learned four force controls. and not to mention we are already on chapter 379! What has he been doing all this time! It's getting boring.