Mental midgets was referring to those who take facts out of context, or omit facts, to twist into whatever their pre-conceived notions may be. There are media outlets, politicians, etc who would cease to exist if it weren't for mental midgets so, in that sense, I guess a mental midget might pat himself on the back as being a job creator. Maybe idiots are necessary?

I've heard it takes all kinds to make a world. There are those
that would have no axe to grind without the idiots.
Vladimir thought them useful.

Obama has proven their use as well......he still has backers ....er.....slackers singing his "laculades".