Autofill = Toxic (I love playing support!)
So I don't hate autofill because I sometimes have to play support. No I actually quite like that part of it cause support is fun and I'm quite good at it. (I don't like normal fill because you basically play support every game and I like playing other positions as well)
Here's the reason why autofill is toxic, because it makes people play support who don't want to or know how to play support. I would rather wait in queue for an extra 4 minutes to have a support actually freaking buy a sight stone. This isn't about meta either but if you're not warding and trying to SUPPORT your adc/team then you're not doing your job. When the autofill support picks Soraka and then proceeds to build full ap without a sightstone and try and 1 v 1 enemies it ruins the game. The extra couple minutes in queue is worth not having the game handed to the other team just because someone doesn't know how to play a role.
So Riot PLEASE. I'm begging you!!! Take away this stupid autofill function and let players choose multiple roles they want. Or work on making supports a larger part of the community but the benefit of faster games isn't worth those games not being fun because someone is trolling.