IMO, IJ would certainly provide that kind of confidence but the none content/abrasiveness would work against you at the same time. In a bar/club environment, fine but I would say it is way too much for daytime/randoms on the street.
Yes, socials do help a bit. Steer it tarther than tame it - It would take large doses with that amount of none.
Quite frankly, Uni is the very last place I would think of using IJ.
All you are liable to get is ghosted or get the backs-up of almost everyone around you. Save it for going out or partying.
So wouldn’t it be good around girls at uni?
Not in a class environment, no. Can you see yourself picking-up and getting down’n dirty with a girl, right there in class, lecture, library or study group whilst telling your lecturer/classmates to fuck-off? That’s the IJ message!
Socialising/partying, however - yes.