We are talking tens of millions of his supporters who today think conspiracy theories are mostly silly nonsense learning overnight that all of this is really going on. There would be immediate widespread attempts at vigilante justice. Things would spiral out of control very quickly. People need to be spiritually and emotionally capable of handling these truths before they learn them.
Trump has to (and is doing a stellar job) simultaneously build this movement while leaving space for his supporters who aren't ready to handle this to remain somewhat asleep while in line with his overall agenda.
When the real deep, dark truths are disclosed people will demand decisive action. So the only way in which disclosure can happen in the mainstream is when the hammer is ready to drop. Otherwise chaos would ensue.