You have done good research. Your premise has logic.
Your premise that all the sightings of the “metallic balls” are answered by your supposition goes too far. You do not adequately respond to the characteristic behavior of many, if not most of the reported sightings which clearly demonstrate intelligent control.
From stationary hovering to Mach 2 in a flash, maneuvers against the wind toward an obvious goal, and many other observations do not fit into your intelligent analysis.
Thank you for presenting your thoughts. I intend to look further into your subject.