she didn't get a buff, its just that the boards/reddit works based on herd mentality.
And once someone starts hating a certain aspect that is usually not defended or liked then they all start bitching about it. Especially if that something causes them to die.
Akali in this case is an assassin. She kills them (check), she also is played by few players so they don't know how to play against her (check) and few people defend her (check).
So, everyone once in a while, when 1 or 2 Akali hate threads get up, a bunch more are to follow.
Like sheep, they all follow the same direction, till they change it and hate something new. Tho, akali isn't that bad pre6, she's bad in the late game.
In the lane you can trade with Q and W. Until she gets you low enough and she might go for an all in.
But you know, respecting your opponent is something people on boards dislike doing, especially if the opponent has no skillshots, god forbid you actually just chill out for a few seconds until her W runs out.