The Satoshi reveals every now and again always remind me of someone claiming to have deciphered the Voynich manuscript - except it's way more scammy and fraudulent.
This is an excellent analogy.
Very plausible, although if and when the real reveal happens, will anyone believe it at that point? I suppose some level of scrutiny should be awarded to each one, even if only to debunk them.
I think that most deciphers of the Voynich manuscript are not scam, but overconfident people that is convinced that have solved it. Ten years ago we have an epidemy of people that had a proof of the Goldbach conjeture, they were not scammer, and it was painful for the people that decided to read the proof to read a large and confusing proof and then try to explain to the autor the error.
On the other hand, I simply dismiss the "I'm Satoshi" claims, they are probably some kind of scam.