Did Riot forget MR as a base stat or was it all intended?

So let's get this out of the way already, I am a Yasuo main (no hate plox) I play him top since that's where he has, can have the most impact atm. The reason for this is because it's gotten way harder for him, to trade with midlaners since I now miss the 12 Mr from runes, and they're not pushed into base stats. But today I came across and Ornn, usually I can beat him in lane and bully him quite hard early game (which I did got first blood and a 2nd kill) the problem then started when we were both level 6. Since I now no longer have the 12 Mr I was suddenly taking way more damage than he was, since he had rushed armor items to counter me. The problem was the fact that he maxed his W and it deals magic damage, so I suddenly was 20 farm up and 2 kills ahead but couldn't trade with him to save my life. But Ornn isn't the only problem immobile champs are usually one of the best matchups for Yasuo since they can't really follow you that well. But when you're suddenly facing a Maokai who rushes a pair of sorceres boots, just to out trade you and effectively giving you 14 Mr against him paired with his high base damage that is simply not fair. So my question is what do you all think about this? to me, it looks like riot is trying to push Ap into the meta again, or even just have tanks ap tanks go more damage than fighters early game, which in my opinion is kinda weird since fighters excel in shutting down tanks. But yea I just find it weird that if someone chooses to go Ornn/Maokai or even a singed they can just rush ap and beat me in the early game even if i play my secondary main which is Irelia. I've taken a picture from Champion.gg which confirms this rise in Ap champions https://gyazo.com/d530f4135115859371010bda98d08087 as you can see the top 5 champs consist of only 1 Ad champion and whole top 10 only of 4 compared to the 6 ap. People are even going malphite with comet and then rushing into a pair of sorcs and then haunting guise just to reduce my Mr to 0. The obvious solution would just be for me to rush a hexdrinker but that doesn't solve the problem for the other 4 people on my team who also now has to deal with this monster of an Ap champion which I can only let free farm since trading is basically useless. But yea as stated earlier what do you think of this? should riot add the Mr into the base stats or what.