Why isn't Lee Sin immune to blinds?

http://nexus.leagueoflegends.com/2017/01/ask-riot-banished-to-prisoners-island/

Excerpt:

For those with sight, Teemo’s darts are blinding, plunging his victims into an abyss of instant night. But little known fact, for those without sight, his darts actually have the opposite effect! As his dart sinks beneath the skin, a world of color, shape and distance swirls before Lee Sin’s eyes. Everything Lee Sin had only ever imagined – the myriad shades of autumn leaves, the nuance of a smile trying to be kept under wraps, the stars blinking their soft twinkle above – dance together in perfect harmony. And then… it’s gone. The nothingness of black envelopes his irises, and once again, the joy of sight is snuffed out. For as we know, Teemo is the devil. And only a devil would restore sight, ever so briefly to a blind man, then take it away again.

I mean, how do boots make Corki fly faster? Or Vel'koz float faster? Why does wearing a cloth shirt better help you defend against physical attacks? Why does a fucking sword make bullets hurt more? Why does Ignite kill Brand? Why can't Nami put out ignite? Why do Nunu's snowballs actually affect Anivia?

There are a lot of things that make no sense in this game, and you picked blinding a blind man? Son

And how about Sona not being immune to silence. Or really any champion who's abilities originate from their weapons or attacking.

i would be okay with him not being affected by them if

they would lower his base ms

give his ultimate and actual cd

them removing his ward hopping

there you go