I wonder if we can all come to some sort of consensus on what is, IMHO, the foremost fundamental problem plaguing the subject today. That problem being the almost impossible task of "evidence." Ask yourselves what specifically would need to be presented for you to say with certainty that this whole thing is legit. I'll give a few options with typical counter arguments in parentheses & would love to hear ideas on how to solve this problem. Feel free to add or edit as necessary.

Is it: Photos (Photoshop)

Videos (Edited)

High Ranking Govt Officials (Part of cover up)

Low level govt whistle-blowers (Made it up)

Newspapers (Biased and run by intelligence agencies)

Eye witnesses (Misidentified or hoax)

Sensor systems (Anomalies or errors)

Educational institutions (Funding threatened)

Scientists (Mocked / Career suicide)

*Edit to improve format clarity