Why can't bots/cheaters that defy game logic be auto-banned?

[shinkufox]

Why can't bots/cheaters that defy game logic be auto-banned?

The bots/cheaters that can turn when rooted, and the summoner bots that can ignore cooldowns.

 

I know automated scripts that actually send user key presses and such are hard to catch, I also know these types of scripts aren't very powerful when it comes to cheating,

 

but

 

with the bots we see in Arena, they are defying the game logic and code. Also the commands they send are going from client to server and then to a client.  The cheaters client might have been fooled to allow such movement and lack of cooldowns, but what about other players' game client and the game server?

Also since this type of cheating is blatant and due to the nature of it, should be very detectable.

 

Why isn't there any auto-bans or faster turn around time to ban these people?