The first point is that even if it is a good idea, it is nothing more than campaign promises to get more votes. It can only be seen as a slogan in an election campaign, nothing more. There is no point in discussing the idea from other angles.
The third point is that this candidate does not have a real chance of winning the electoral race, and therefore he is trying to gain support from the crypto community, forgetting that this technology does not serve the interests of financial institutions, and it is very difficult for this to enable him to obtain the support he is looking for.
The third point is that a decision like this cannot be a decision of the president alone, and it may have nothing to do with determining the country's financial policies, especially since we all know that the Federal Reserve is an institution independent of the White House and Congress.