If he legitimately tries, that is enough for me.

I can almost guarantee you that both corporations and the right wing will try to stop or reverse anything he does. If he shows that the Republicans oppose these extremely popular initiatives, it might cause a massive swing of voters, who believed trump's campaign promises, to shift over to the left.

https://gothamist.com/news/how-voters-in-trump-districts-helped-mamdani-win-the-democratic-primary