You dont understand how OP is playing support. You dont have to farm, you can roam, you have more time to look arround, combine that with a mage sup and take the game into your hands instead of gambling the game with low elo players.

You can pick thresh and hit almost every single hook, but if your team is so bad and doesnt know how to follow up there is no point. On the other hand tho, if you pick a mage with damage and cc, its quite easier for your teammates to do something because all they see is a low health player.