Should Stupidity Be A Bannable Offense?

[NintendoPie]

RCTjunkie said:

First off my cell phone has a tiny ass keyboard that is really hard to type with. 

And it isn't the fault of the stupid people for the derail. I've seen people ignore post and continue the conversation no problem. Anyone who responds or engages them is the problem. 

I left you a little niblet but you didn't catch it. Darn.

Anyhow, this is the thinking I'm trying to refute in the OP. People need to be told they're stupid if they're being stupid, but those good samaritans who inform others of their stupidity at times are cruely banned; how will people ever learn?