Bot Band-Aid Solution
So, there are bots, mostly in low level ARAM's, and low level co-op vs AI matches. We all know this, including RIOT.
They have their reasons for not addressing this daily. They say it's so that the botters can't figure out how they were caught, and I believe that. And, I am certain trying to keep up with this on by the report, or even a day to day level is an unreal amount of work.
So why not have a behind the scenes "bot" que? When you get red flags, or even reports, and there seems to be some legitimacy-you get thrown in a bot que. (this can even be discerned by a computer system) If you are real, it shouldn't take too long for it to register, or they could even put an easy way to prove you are human in the bot que lobby.
Then RIOT can dispose of them at their leisure. The botters will not be pressed to make changes right away, they will still be getting the experience they are after. And, we wont have to see people complaining about bot every other post, it's a win-win.