I mean, it's an unmanned aircraft of some sort, and unmanned aircraft are typically called drones. What difference are you suggesting between "drone" and "UFO/UAP" in this context?
Drone pretty clearly implies to me "a craft piloted remotely by a human." A UFO/UAP is an aerial phenomenon we can't currently identify. It could be a human piloted craft, it could be something else yet to be determined.
People seeing UFOs are notorious for imposing their prejudices onto what they think they see. If they don't give an objective description of their observation but rather a conclusion like "drone" or "6 feet" (how did they estimate size without knowing speed or distance?), then it's not worth much.