You're the one alleging that they took the screenshot as it counted up in a dynamic process. I'm asking why you seem so sure about about that, in contrast to alternative possibilities. Seems like you can't answer.
So the ad had run 88 times when Media Matters took the screenshot? [...] The article doesn't specify what is being counted, but Media Matters was clearly counting something. And like any counter, it's bound to pass 88 on the way to however many versions/targetings/updates/campaigns/whatever the campaign had planned to run.
I was willing to listen to your argument, but instead of making a case you're just insulting my intelligence.
Because evidence for something doesn't require proof beyond the possibility of conjecturing alternative explanations, and if it did, nothing would be evidence of anything, since any sense data could just be hallucination, and ultimately anything that could be cited as evidence at some point relies on sense data.