Yeah, but the rumors were already there since EoF. And if they further went this way, sooner or later there would have been an episode with either a confirmation or a denial if the rumors were true or not...
There already was -- "The Last Outpost." It started out making the Ferengi look scary, the huge sharp-toothed guy called a "DaiMon" (like demon) on the viewscreen... and then we see them in person and they're small, laughable figures. The whole idea, consistent between "Farpoint" and "Outpost," is that the Ferengi projected a frightening image of themselves to conceal the less intimidating reality.