The UFO phenomenon was a unique conflict of government vs humans.
Normally the government makes up a fake “threat”, calling it an “attack” or “witchcraft” or “commie subversives” or “Islamic terrorists” or a “virus”.
Ordinary people are NOT observing the nonexistent “threat”. The government has to persuade us that the “threat” is real so it can ruin and kill us for sexual pleasure.
With UFOs the balance was reversed. Ordinary people were seeing things that seemed like threats, and the government was trying to persuade us that the things were NOT there.
Most likely the things were government projects, but that’s not relevant to this basic difference.