Don't worry Riot, their identity is safe now! I'm sorry for not editing out their names last time!
But yeah, this is becoming a more and more common occurance, and you barely see any game without a bot that just feeds and does nothing else anymore. I reported probably hundreds of bots and never got the popup that any of them got banned. Most of them are in their high 20s, some even level 30, so it feels like - and that's been like that for over half a year now. Really feels like Riot is perfectly fine with people botting. Or people blatantly feeding all over the place for that matter.
As long as you don't flame.
PS: Before anyone asks again, coop vs ai makes for a fast (unless you get 4 feeder dumbos) and reliable first win.