<div dir="ltr"><div>RSZA explains that in reality it isn't derech cheirus for anyone to lean today, as per the Raavyah. . The other Rishonim hold that nevertheless the Takanas Chazal was not cancelled. </div>
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<div>Since men *uniformly* leaned in the time of Chazal, they can't make use of what should be the baseline Halachah - like the Raavyah. They are bound by the Takanas Chazal. But for women, who did not *all* lean in the times of Chazal, since many were subservient, there is no Chazal-dated established uniform minhag of women leaning, so, despite all being chashuvos *today*, they can rely on the Raavyah lechatchila, who says that *today* it isn't Derech Cheirus at all. </div>
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<div>"V'davar Zeh Hu Emes La'amito B'pshat."</div></div>