Can our species handle the truth? If not, then withholding the facts might make sense. But what does that mean? What is likely to happen to humanity if the truth about UFO/UAPs was widely disseminated in a convincing way? Would it help unite us in today's turbulently divisive world, or will it cause even greater disruption to everyday life? Will denial and dismissiveness be the overwhelming reaction? How will religions and governmental powers deal with the truth?
The fact is, we don't know for certain.
I agree with Bryce that it's well worth sharing the truth and I'm confident that our species has the capacity to handle it. I believe there's a good chance it would even break through our cognitive biases and help guide us toward creating a better world!