Most of these sorts of things cascade to a halt very fast when the cover-up becomes the story, so people need to avoid any perception of being seen to be involved in the cover-up.
It's a similar group dynamic to what you get in purity spirals or witch hunts, but this time it has an overall positive effect.
So needling people about reports like that to ask why they're withholding information, and question their motives, is probably quite productive around now.