1) This isn't a recent phenomena. People have been seeing discs in the sky for literally thousands of years.
2) Aircraft can't make 90 degree turns or descend from 80,000 feet to the deck approximately instantly.
3) Groups of extremely highly trained military pilots have seen them, and the video and IR data has been released from these encounters. You can't make 4 people in 2 aircraft hallucinate at the same time, and fool all the instrumentation on them (radar, IR...) and also fool the battlespace radars on the cruisers directing them. And if you could, that too would be kind of interesting to look at whatever that is.
You're repeating old points you don't understand because as you acknowledge, you don't know the subject. Please start with Vallee.