It's legit the new Windwall and I'm talking about the community, not Akali. It's super easy to play against her once you get her gimmick patterns.
The way her kit is design allows her to only play in a few ways with still place for certain difference, but her pattern is the same : In and Out until either you die, they die or you need to retreat.
This is the beauty of her design and on a worse scale Yasuo (To clarify : Yasuo Kit also as a certain pattern of action that makes him also bad against people who understands does pattern. The problem is, the player is free to ignore these patterns because of a lot of factor) , she got a certain pattern of actions she NEEDS to follow, she can adjust around it but her kit FORCES her to act like that, once you understand the variant and ways she does things, it's just becomes a skill matchup, unless you're an ADC, her shroud means nothing, just use AOE abilities, corner her, force her to come out to get a clear shot. If you only play single target point and click assassin mid against her, of course she'll beat you.
Just learn, days goes by and we see her winrate slowly, very slowly, drop and drop because people understand more and more those "patterns".