That $100k is exactly 0.00147% of the $6.8 billion total spent (according to CBS) on political advertising during the 2016 US election.
However, Facebook says that the $100k in question was not political in nature, and didn't feature or favour any political candidate.
Facebook has also said that 25% of the ads never appeared to anyone, because they weren't relevant to trending interests - and 56% of the ads that were shown were ran AFTER the US election.
This is the mother of all nothingburgers.