Spain recently shared some documents admitting to weather manipulation through chemtrails. Too lazy to look it up. Where I lived, the trails lingered the whole day. Recently moved to a different country with higher humidity and never see a trail.

Whistleblowers do come forward with covid since we have the internet. Not that it's resulting in any official changes. Official stances on truth don't seem contingent on whistleblowers but instead on being officially recognized. For example bldg 7, WTC - whole world sees it demoed without it being hit by plane, still gets written off as conspiracy if you question why it happened.

Also, it's not that everyone that works at NASA gets the moon landing explanation. Probably most employees believe it just as most medical professionals believe covid is a radical new dangerous virus.

China and Russia might have been duped in the beginning and now it would be too embarrassing to admit it. Or maybe their narrative also depends on moon landings. They might have different reasons. They also played the covid game.