I may believe him or whoever if he promises to integrate blockchain technology in some economy/monetary fields. I remember an independant candidate from the US presidential election who also propised voters to get into crypto if he would win but we didn't here that he has a decent numbers of votes due to his promises.
NYC citizens who are interested in the cryptocurrencies would be sure that this candidate is selling them the illusion toward their votes, and ignorant people don't even know about the existence of bitcoin .
Also, I am thinking that maybe it is also one way to attract crypto donators to them. With crypto transactions, no one will know how much is donated to their campaign. Because they can hide it by not disclosing those funds. But anyway, looking at the bigger picture, politicians promoting a crypto-friendly environment is always welcome. Because the more adoption that we have, the demand will further increase and so its price in the market.