You do understand that those sightings were from air controllers and per a review from the AMA many sightings were of legal drone operations. The AMA verified many of them and some even had permission to operate, some were sightings of model airplanes flying legally from a nearby model airfield.
When reviewing pilot reports and the near-miss reporting system there are not nearly so many entries. Also reports from flying fields would never happen and when they do would be suspect as well.