She appears to have very high approval ratings among her constituents. At the end of the day they are the ones who matter, not HN downvoters, not the people who criticize her or don't like her, not anyone else.
There have been moments where she has disappointed her greater base (this includes people outside her district) by not being stronger on pushing back at her own party.
It seems like a losing proposition. She is only a small handful of progressive candidates and anyone of her cohort who speak out have their reputations cemented in a negative fashion.
Just ask Ilhan Omar: Among the many right wing attacks against her are stupid things like her supposedly marrying her brother and on the left wing she is constantly attacked for being anti-semitic despite raising obvious points on the corruption of the Israel lobby. AOC, Ilhan, and the squad are used by the Democratic party when it suits them but at the same time all their bills are quickly killed so whats the point?
There has been so many decades of left wing apathy that every single entity that musters up any little bit of courage to fight the right wing using their own tactics are quickly branded as a dangerous being and that negative emotion is permanently sewn into people heads.