You've seen the tons of letters they wrote. You know and would be absolute power posters if the net was around back then.

The democratic party of the united states of america is a reactionary far right bourgeois ethnonationalist settler party masquerading under a progressive pink capitalist veneer. They are as bad as the Nazi party in their profound support of capitalism and the subsequent genocides required by it, including their long time support of the settler-colonial zionist entity. They have helped fund, arm, and plan the most barbarous murder of 1 million souls over the past 2 years because they themselves are funded by the bourgeois who greatly benefit from imperialism. They are fundamentally rotten purveyors of genocide and white supremacy whose role is to help destroy any attempts at grassroots class conscious left wing organization in the united states.

While the fact that Mamdani won is good in the sense that it means popular sentiment in New York is changing in favor of the left (because most americans are uneducated so they THINK the democratic party is something different from what it IS), entryism into the Democratic party is as much of a dead end as entryism into the Nazi party during the 1940s.

This is a fact that no amount of "WELL WHAT ARE YOU DOING THEN??" cope will ever change.