Every role is useless alone, numbnuts. Supports are mad because a great carry can deal with a shitty support, but a great support is pretty much bunk if their carry is garbage, which earns them smack talk too. Besides that, most people who snap at supports are just trying to pawn off their own garbage plays. That's pretty much why anyone talks hard shit in League-- to try and make someone else look worse.
Also, who cares about someone else's progress? So they're not a great player, or bad in competitive situations, or picking the wrong role, or don't play the game all the time, or a million other reasons. Your progress is the only relevant progress to your stance, since if support was so easy you'd go do it your damn self.
The job's rewarding, not easy. And you-- people like you, who just have to make it about what someone's doing wrong every single time-- you take even that away from supports, so they're just item backpacks for thankless ingrates who refuse to admit to their own mistakes (and God knows you make them). Sure, it's 'stand in the back' or 'peel for your carry' and 'nothing else.'
But, you know, support can't do a god damn thing if their carry is ass. They can try all they want but a bad carry is an easy target and an enemy with some braincells will pretty much exploit it to hell. Asking JG to babysit just gives their JG free reign on 'literally anything but bot lane' and once you start favouring a lane, an enemy with any braincells will pretty much exploit that weakness to the max. (Mid stalls for ganks, top pushes to grab jg attention, bot plays defensive) Meanwhile, a crappy support will just end up making a good carry have to play careful and the JG will have to set one or two good pushes up, which I admit would be garbage if the JG wasn't a pick conducive to that. Even still, support holds so little influence that even when it's good, even when it's great, it's still really only as good-- or maybe a little better-- than their carry. They can't do things alone, and most supports that build mage are just sitting ducks under CC, while most support tanks can't ramp quickly enough-- 
might pull it off though-- to start making up for the damage lost by an easy target of an ADC.
You don't understand that the road goes two ways. The moment you start sucking, we have to be on fleek with the perfect picks or we're just as badly off because the picks can only really preserve an ally-- they're not often slated to killing enemies very effectively. That's why Brand and Malzahar made it into support picks, because when all else fails, they can back onto something like a Luden's to hit a damage spike and start the carry train. I've even heard of Ashe supports (Stoneborn Pact can be used to proc Ardent Censer, since Ashe's autos and Ws apply a slow) which is just telling me-- maybe if carries are inching in on support territory, the champions actually fit to the role are beginning to feel like ass.
Now there's changes on PBE that look tight as hell but we're going to have to see, projection does not always match the practice. I remember when people said Ivern was a garbage jungle because he was too easy to counter-jungle.
do a lot of dmg and can carry throughout all elos, while someone who mains janna
will have a lot harder time trying to carry in bronze than in diamond regardless of that persons individual skill. Most supports aren't supposed to hard carry of course because they're supports, but put their team in the best position possible. Coming from a talon main supports can have a big impact
every time, i don't think HE is going to win 90% of his games..
.. then sure..
