The headline is a quote from the movie Forrest Gump, originally uttered in defense against accusations of stupidity. The meaning is that people should be judged by their actions rather than by what they say or how they look.
The same phrase describes the Trump administration in a nutshell, only the other way around. Judging by their actions during the past year of a failed presidency, there is only one conclusion to be drawn: These people are stupid. Evil racist creeps, yes, and criminal lying bastards as well the lot of them, but first and foremost they are not very smart.
