No, Ben, I don't think so.
Many people are out for afternoons or evenings driving or having a picnic or doing other recreational things where they expect absolutely nothing out of the ordinary. Most people seeing UFO's--especially up close and personal--expected nothing of the kind--actually--nothing at all.
They weren't star gazing. They weren't looking for airplanes in the sky. They weren't bird watching. They weren't looking at clouds and labeling them. They weren't looking for contrails. They weren't really paying much attention to the sky at all--until more or less forced to--by the shadow or huge image or what have you of the UFO looming into their field of vision.
WHEN SOMETHING TAKES OUT 40-70% OF THE VISUAL FIELD, IT'S A BIT HARD TO IGNORE. All the more so when such a huge something is SILENT and LESS than 300-500 feet away.
Sometimes, in quite a number of cases, the distance to the underside of the craft directly overhead of the viewer is less than 100 feet. I believe there are some cases of teens throwing rocks at such a close overhead craft and either hitting the craft or hitting some kind of force field close to the craft.
You can call that swamp gas if you wish. I wouldn't dare insult them so.
When a large craft like that is close enough to see small details of the underside . . . mentally filling in fuzzy distant images with a wild imagination just doesn't cut it as an explanation.
And to assert that it does is a very different kind of hubris than I want anything to do with.
And, reportedly in some to most flight modes, the propulsion physics have such a light bending effect that sharp photographs are highly problematic at best.