Only speaking for myself (also not a political wonk): I do not expect Mamdani to be able to enact all of his policies. Not because of money but because of political opposition from the powerful.

I felt the same about Bernie and Medicare for all. We have the money to do it, but the powerful will not let it happen.

However: that doesn’t mean we should elect politicians that won’t even try to make these things happen. It’s important to have a North Star to shoot for, to move the Overton window of what’s worth discussing and to keep an eye on what political machinations block it from happening. I will never vote for a politician who pre-compromises with an imagined opposition, because that tells me they have a different North Star than I do in the first place.