ADC/Support main here, so I may be a bit bias. I personally don't care what my support is, so long as they actually do something during the game. Having a Janna that stands 10 feet behind me and randomly drops a shield on me is way worse, in my opinion, than having a mage support that is actually trying to harass the enemy without much peel. I don't mind playing passively, but if all my support is doing is leeching experience without contributing to the lane, I'd rather they just play Soraka so they can at least heal me up from all the poke I'm trying to dodge.
To be fair, if you are building something like
or
, then you technically aren't a typical support in my opinion, you are an underfed midlaner. Yeah, death is the best CC, but having
is being more of a support cause you are buying items to help your teammates. Obviously there is a time and place to buy these items (zyra with athene's is kinda worthless without a locket for example), but so many supports forget that you are suppose to help your team. Dealing damage is just a bonus late game. Your ADC should be doing 90% of the damage late and you should be protecting them. I'll still call you a support if you have 1 or 2 AP items that synergize with your kit. But when you have 4 AP items, magic pen boots, and a sight stones and saying you're a support, that's like saying the top laner with
is full tank.