Why is anyone complain about yi or his buff

In a meta where basically everyone is yi and can instant kill people usually even faster then he does other day I was playing ap malphite is a good example 3 items 1 shot 3 people instantly as they were cced pretty much any champ that builds full damage is yi atm yi usually can only kill 1 person before cc and killed if he goes full damage and if he goes bruiser u run the risk of being cced before u can even kill that 1 person 1v1 wise I admit he is good but he is weaker then jax or trynd at it who both beat him without needing to stack a rageblade and have far superior early games cause of conquer and ignite buff yi has no chance against trynd late game cause W almost does nothing when half of trynds damage is true damage basicly he gets master yis E atm I would say yi is slightly below average not really weak but slightly below average most do to if your not terribly behind on most champs u can burst him or cc him and beat him and since he can't lane and jgs and has terrible early game ganks why should u ever be behind unless your jg sucks or you suck and lose lane solo