How does Stanley dismiss Blanche's affectations?

Stanley dismisses Blanche's affectations by exposing her pretensions and fragility, often using blunt and crude language to undermine her illusions of grandeur. He sees through her attempts to present herself as refined and sophisticated, revealing her vulnerability and dependence on others. By confronting her with harsh truths and asserting his own dominance, Stanley strips away her facade, ultimately asserting his control over the situation. This clash highlights the broader themes of reality versus illusion in Tennessee Williams' "A Streetcar Named Desire."