Remember when Ziggs botlane was introduced?

Boards were all for how this meta shift affected how people viewed the necessity of AD marksmen carries. What I don't understand is why the boards are at the same time bashing mages who take the "support" role in the botlane, effectively having two carries in it. There is a hypocrisy that needs to be addressed: If mages replacing AD carries is welcomed as a meta shift because the AD isn't inherently necessary, why can't they replace supports? I feel like every time this is brought up, the boards gathers around, crouches over, and rapidly jerks their downvotes into the post in unanimous agreement not to honestly ask themselves that question. No, I am not in favor of mages completely wiping out the possibility of traditional supports being played in the botlane. If they're made to be healthy as a "high risk, high reward" tactic that is an alternate way of playing the game, I'm good. Pure supports should NOT have to be in every single game, in the same way that a midlane mage or a botlane marksman doesn't have to.