People always complain that the thief is ‘way too OP to compete with’, this is incredibly untrue… The thief, for maximum damage, has to sacrifice all of its defence whereas other classes do not suffer to an extent even comparable. The thief does not need a nerf, those who complain it is too overpowered are obviously not very decent competitors toward the thief, because if they were, they would realize that you can down them even when they are in stealth, as they are just that squishy.
Most experienced players find themselves on equal playing grounds with the thief, even damage wise. Other classes get base rate hp of about 15k, whereas the thief only 10k.
Those who also complain it does not take skill to be a thief (a half decent one), are also, quite wrong. Sure, you can mash 5-2 all day long and achieve things, but you will just die within 10 seconds. If you have some brain capability, you should realize that thief is not just about mashing buttons, it takes educated predictions, and thinking power.