I would say the lesson is can we stop trying to prove him correct. I am getting a bit sick of conspiracy theories going from "that's absurd" to "oh, hey, about that, uhmm, we are actually doing that".
Idiots are like Nostradamus because their incoherent ideas can cover a very large space of possibilities. Especially when steelmanning is taken too far and goalposts are allowed to slide from "this specific resturant is selling child sex slaves in their basement (when in reality it doesn't even have a basement because Washington DC is swampland)" to "my political opponents are all child molestors based upon a tortured redefining of innocous emails" to "child molestors exist!".
Lets be real here, Alex has made a lot of really specific allegations that turned out to be true : he's also said a lot of complete fucking nonsense, but he never "moves the goalpost" ie he doesnt make claim A and then when B turns out to be true he makes claim B. Rather he makes claims A B and C and then B turns out to be true.
Sounds trivial but it is not. He actuall has said a lot of shocking and true shit way before it was public knowledge : e.g. he's been talking about epstein since way before any mainstream media was.
Recently he has been saying that the government is using methods of intravenous dmt injections to talk to interdimensional aliens in order to obtain next gen technology. Inb4 that's true. (/s)