"Individual actors don't matter, systemic material conditions determine what may happen. Anyway, here's a single bad take from a Twitch streamer some people like, which proves that the (tankies|anarkiddies) are once and for all cancelled..."

The fact that she's still a Dem detracts from/cancels out her good qualities as an individual politician. She implicitly promotes Dem entryism and tailing the neoliberal Dems by staying in the Democratic Party, which is a capitalist party "through and through", to paraphrase Pelosi. There's an actual systemic materialist basis for criticizing AOC and by extension the rest of the Squad and DSA Dems; any individual instance of AOC falling short is a symptom of this broader problem.