It used to be _conventional_ to have scantily clad “booth babes” in pretty much every technical conference’s vendor room (worse at things like CES, but I remember going to a mid-2000s VMworld conference where there were some booth babes). At some point—in part because of pushback against the sexism of “booth babes”—it became embarrassing to have them. I remember discussions on various sites (IIRC, including HN) where people lamented “feminism” for the disappearance of booth babes. Ultimately, the people who lamented it couldn’t keep up with the changes in convention.
It used to be _conventional_ to be casually sexist or racist in the office. The convention changed. The people who are supposedly being “canceled” have been unable to keep up with the convention. It could be personal sexism and/or racism, or it could simply be systemic sexism and/or racism and they haven’t _quite_ caught the memo that the convention changed.