Before accusing Riot of encouraging gameplay trolling, consider the following...
https://media.giphy.com/media/mjtbVfjZVUYQ8/giphy.gif
Riot has stated several times that gameplay trolling is not acceptable and is currently a high priority issue at the moment. In fact, when gameplay trolling is detected, it is punished with an escalation. As we speak, Tantram is likely dealing with a very large epidemic.
Yes, it's true, the current system is flawed at detecting gameplay trolling and It's easier for the bot to just read the chat logs and punish key phrases. But that doesn't mean that Riot condones trolling.
Riot are working diligently behind the scenes to hopefully fix this issue soon, please, have some patience with them while they figure it out. It's a complicated issue.
In the meantime, let's do the best we can to report these trolls to help Tantram and his bot identify and punish these evil doers. Try not to flame, it will open you up to punishment from the bot if the troll reports you.
Please, don't feed the trolls.