After playing some LB I am not actually surprised why people hate her
I mean,she is really freaking mobile,a tether that can root which has an inaccurate animation to hitbox,her early game is unbearable to play against in most match ups,her mid game Q+R isn't very fun to go against and lets just add the fact that she can kill someone at about the speed of Rengar
A weakness i have seen although,arguably a portion of her that takes a decent amount of skill,is team fighting with LB W at the wrong time?you get crushed by cc although your passive might be able to save you Choosing what to do,major lockdown with E+R?Huge AOE damage with W+R?or just straight up remove someone with Q+R?
something i have consistently seen with bad LB's is that they could crush the laning phase,lets say 11/2/1,but if they can't team fight properly she'll end up being unable to use that lead