How is this okay? Like does no one care that it's been a year of this?

This champion has been a scourge to play against in ranked and only brings a toxic feeling for people that play against her. Before all the support mains that freak out that janna is balanced, calm down. League tends to have a rotating meta that supports multitudes of playstyles that tend to last maybe a couple months. How is it that this champion is allowed to run wild for almost a year now? I know that items also play a factor into this such as redemption and ardent but we just got out of ardent censor meta just to be thrown back into it. Very few champions can deal with the amount of peel that she provides and even less that can kill an adc through her shields. Her ult isn't even used as a mass disengage against teams most of the time now and is usually used against one person while everyone just stands in it for a massive heal. They say assassin's should counter her but a majority of the assassins that did were reworked into something that doesn't instant burst anymore (i.e. Le blanc, Talon, Rengar before this patch.) This is honestly a bit ridiculous looking at the statistics of the game and seeing that the top 4 win rate supports (excluding sion) are all abusers of the ardent, redemption combo. There can easy fixes to this by simply increasing the cost of the items or nerfing the % ratio that the shields are increased by. Even can tweak the numbers of their base/growth stats on their shields since Aery also applies a larger shield upon the existing one. There are simple fixes to return the support meta to a nontoxic stable place where champions don't reclaim 1,000+ hp from a shield with only 3 items on the support.