Look, it’s pretty simple. Playing against Riven isn’t a fair matchup, she can do all of your HP in pretty much an instant thanks to her combo. It isn’t funny playing against her and no one wants her to be meta, who likes a champion that can have 10hp but as long as all her abilities are up she can still oneshot kill you?

K’Sante got his kit adjusted because of the same issue: when he would ult you, you would get oneshot while being perma CC’d. This is the same thing that Riven does.

Why isn’t this being looked at?

I find it funny when you are chasing Riven players with 10hp and they go into a bush and then you just bait their R and never go into that bush again because they know that even with 10hp they can and will oneshot you.

This is the same that K’Sante would do, he would ult you with 10hp and kill you. Riven can do that too yet they are not doing anything about it. The main difference is the skill it takes to execute both combos but they do have the same level of counterplay: zero. Maybe the Riven players under a determined elo are too bad and can’t execute her combos correctly.