Lee really isnt that OP.
Know who else can ward hop? Jax
Now for Everyone favorite Game show! How many downvotes can I farm with my opinion on Lee Sin!!!!
Lee Sin Isnt OP.
All of his Mobility is restricted mobility. He has no free movement. He requires a set of circumstances or he actually doesnt have any mobility at all.
His damage falls off later in the game when people get resists or just scale up. While he can still 100-0 a carry if he gets on them. This requires him to dive into the whole enemy team to do this shit. so if someone just CCs his ass he is dead as fuck since he is literally in the center of 5 people with no backup.
The Ult has been nerfed to hell and back. Its fine now.
The E. Had its revealing removed. and like 2 seasons ago its attack speed slow was removed. Its fine now.
His W only gives a shield if jumping to a champion or using it on himself (iirc)
His Q Is very strong but still not OP. Its a dash if you hit the first part which is a fair skill shot. And it does good damage. Still to get the 2nd activation he needs to land the first.
TLDR: Lee has been nerfed to hell and back. He is fine. Riot isnt playing favoritisim. They are just keeping Lee Sin in a good spot. Right now the meta suits him perfectly since its a gank heavy meta. But thats more on the jungle itself and not lee. While the meta suits him it doesnt make him OP. it just makes him the go to because he is built to do it.