Really? His subject heading clearly indicates he wants to abolish the usage of a certain phrase. I furthermore take issue with his insistence that we "adhere to the rules of grammar." That's just intellectual snobbery. Some players are more eloquent than others, or perhaps English isn't someone's first language. So, that means they shouldn't be allowed to post?
His original point was that far too many people resort to using "it's dumbed down" as their whole argument. Obviously "abolishing" the word isn't going to happen, and asking for such is silly...but he has a good point. Personally, I don't mind when people say it
as long as they explain why. That's what he's saying. Don't get caught up in the semantics of arguing over censorship.