the more i think about it... was there a reason not to tell the citizen of atlas & mantle about salem the moment atlas forces were back on home soil? like, the plan was to repurpose amity into communication satellite to reveal everything to the whole world anyway, atlas included, so there isn't exactly a reason to hold off from that?

the only issue would be proof, but that's the same issue telling all of remnant has, so it's hardly a meaningful one, so... why wait? have everyone on same page, making things like the dust embargo and closing the borders slightly easier pills to swallow. continue the amity project in secret if a must to ensure its safety, but everything else? the military was called back for a reason, there's no reason to hold back information at that point; just rip the bandage and get it out of the way.