Yeah, And in everything else someone gets forced into the role unless a random support main just so happens to be in the game. And from the wait times in Teambuilder compared to everything else it should give you a idea on how often you get someone who really wants the role. I can Que up as support ANYTHING and people will take it because.
"well i don't want to wait another 15-30 mins to get lucky i'll just have a (???) support"
Supports hate the game 99% of the time, because they have very little control over who wins/Loses (as a support main trust me it's the most annoying shit in the world to get a Vayne ADC in ranked because they saw (pro name) do it, And think they are just as good then proceed to go 0/6 I'v hit the point that i'll just build whatever the fuck i feel like, Play any champ as a support sounds fun, And take farm whenever i want it.
You know why? Because once your lanes lose and start arguing, They will turn to that 1/4/30 support and go
"STFU stupid support you're 1/4 i'm 4/4/2 i'm better then you, AND WARD MORE" Somehow forgetting that you can only place a max of 4 wards on the map.
ADC loses your fault. No matter how well you play, No matter how tryhard you are. If your ADC decides Hey i think i'm going to farm while my support gos in to try and get me a kill. You die, And you're the stupid one. You can get your ADC 30/0/0 And they are the ones "Carrying" I can't even tell you how many times i should had just afked and let that stupid bitch die again and again. See how well he carrys without me.
Because the adc in at least 70% of games is going to say this.
"Go somewhere else stop taking my farm, I don't need you."
While you sit at 7 CS that you took while they were gone or you were fighting and a stray skill hit a minon.