@ARSo
I think you ‘dont see it’
is because you have not tried [properly].
Chazon Ish said that whenever he is deliberating on a pshat to gauge its merits, he tries the following.
First he banishes all possible problems with that pshat- as if they do not exist and fully concentrates on its merits and how it would make sense with the language, other sources and its logic.
Then- and only then, he changes course totally, concentrates fully on its problems as if its merits do not exist at all.
Only after all said and done , once , as a result of the above, its merits and deficiencies are totally clear to him , then he weighs them up , merits vs deficiency, and decides whether the pshat is emet or not.
—————–
Its important to establish here that this idea of a test is not mine. it is the RAMBAM’s.
RAMBAM clearly is worried also in the case of a navi, also in the case of mashiach, about the same issue.
How do we differentiate between false pretenders and rightful claimants ?
And he gives solutions to both.
There is a test the claimant has to pass , in order to be established as a rightful name bearer.
You have not addressed the question of how the test could have any meaning if there is the possibility of a second chance ?