Yes, by all accounts, Milei is legit :)

That request for evidence is interesting. At first, I might answer it in a rather paradoxical way, for I can tell you from direct experience that the best evidence I have is that there is nothing else to see than what you see yourself. He is what you see. I can confirm that the perk is that there is no perk.

But in a more interesting note, I can speak for the less known aspects (though not secret at all) of working "backstage". One the things that permanently amazed me was how strict and serious he was with his internal rules: "no dirty money, no selling". Said and done, NO ONE received money, and candidates where all responsible for their own spendings, something I saw myself. The campaign was made with no funding, everyone was a volunteer, and the symptoms of "every candidate pays for his own" could be felt whenever a candidate performed poorly in their local elections (under Milei's name), for they where quick to complain as if the money spent should have assured them the election.

PD: honoured to receive a question from one of the crew! :D