OMG, do people stay up nights thinking of things to be afraid of? Now fecal matter, presumable aimed in a downward matter, is going to defy gravity and fly over the top of the stalls and somehow land on your food. Don't get me wrong, I think it would be gross to eat in a bathroom, but, I really doubt that there is any threat from flying fecal matter unless you are watching a monkey display.
And as a footnote, if indeed there is someone with that powerful a movement in there, I would recommend being in another county, never mind the same bathroom.