Why people complain about lee sin a lot?

Logically he strikes really hard and preciously for a blind guy and leaping all over the place despite being blind, again.

The real problem I have with lee is his ward jump. I'd be ok if it was gone.

Because he has the makings to go anywhere in the game and have a decent chance of winning, because he has ridiculous base damage, super mobility, which includes a what, 7 second 800 range gap closer or more, reliable escapes, an ult with massive damage, hard cc, and it's on click, and on top of that, he also has a shield, and a slow, and his ultimate can hit multiple people and cc them all.

Also, you don't actually need to have any practice with him to still have a positive and powerful game, because of the champion that he is. But you add those who have a lot of skill and you'll see him in most LCS games, just like zed, vayne, etc etc. They're champions that are pretty decent in bad hands and ridiculous in good hands. And they aren't even hard to learn in my opinion.

1. Vayne, rush attack speed, learn tumble mechanics, destroy tanks and bruisers without gap closers easily, as well as being able to chase nearly any champion down. 2. Zed, learn shadow (Which took me two minutes to use efficiently), hit easy skillshot with both, E with both for 60% slow and damage, then ult and have base damage plus added damage put onto the base damage.

because every other champion is nerfed, but he is untouched in spite of being top pick in tournaments for many years.

My biggest issue with him, besides the fact that Riot loves him and can't stand the thought of making him weak as every other champ, is that he's the only champion I know of that can easily counterjungle with no risk. If he finds the enemy jungler he can almost always out duel him, and if the enemy jungler gets help Lee Sin can just hop all over the place to safety. If the jungler doesn't get help, since they probably don't have 8 million escapes like lee sin, he's probably dead. That's my biggest issue.

People hate him because he has an overloaded kit and want to blame the fact that they lost on the "OP FREELO 27 ABILITIES ASSASSIN BRUISER TANK MAGE CARRY JUNGLER"

Honestly, he's not that overbearing at all unless you have a lot of practice on the champ and know how to handle all his abilities (in which case, granted, he can be really overbearing).

Despite what everyone will tell you, he isn't easy to pick up and Roflstomp with. I'm a jungle main and I suck at Lee Sin and I don't have any problems playing against Lee Sin. I actually like it when the enemy picks Lee cuz 9/10 the enemy has no idea wtf they are doing on the champ and can't solo-carry the game in the first 10 minutes (after which Lee starts to fall off). Meanwhile, I'll pick a champ with a much more linear kit and will have far more of an impact

He has a: gap-closer, escape, hard cc, soft cc, shield, no warning aoe abilities, 600 damage knockback ult with almost no warning(in perspective, most champions have 450dmg ults, sometimes aoe, with large warning)

And when you master playing him, you can burst people really fast

He does a lot of things too well. Riot has been making sure recently to add clear weaknesses to champions... Lee Sin doesn't really have a clear weakness. He's just generally good, and at the end of the day that's bad.

I personally find him more annoying than anything, but he's been in the top tiers for a while.