"why is the government allowing, pushing, in fact, people to talk about what they saw."

Try to answer that question through the lens of the Q drops. The Federal Government, and more specifically here, the Pentagon is not a monolith.

Some want or are forced to advocate for continued secrecy. Others advocate for the truth.

Ask yourself why some are advocating for truth and providing cover for whistleblowers, especially in the context of this video/interview which is more about the shadow government than alien tech.