They already declared war on them; from Pelosi’s perspective it’s simply not politically expedient for her to highlight the cracks in their party right now, as she’s re-asserting her leadership. Dems are doing all they can inwardly to oust the squad already just short of an outward, explicit feud. That won’t change regardless of what AOC or whatever left leaning Dem does. Their only real use is publicly and loudly identifying the cracks in the party to build the mesh of cognitive dissonance and make it theoretically a little easier to convert libs to leftists, to grease the wheels of organizing. They can’t actually accomplish productive change from within the party as a consequence of its structure