Yasuo MR Buff

Why is Yasuo getting MR buffs? i am okay with Q and maybe R but MR per lvl buff is a lot. He is not weak at all you just need skill to play him He will get 100% ban rate,im not yasuo main neither i play him often.I main mostly ap champs and this is why this will be a problem,by increasing his MR from 0.5 per lvl to 1,25 per lvl,so every other champ who has 0.5 MR per lvl will have +9 total MR at lvl 18,yasuo will have +22,5 total MR from scalling at lvl 18.So he wont even need to build MR items anymore,he will only need Mercury's Treads which gives +25 MR.Please do not buff his MR