The only exception here is the cancelling of people with relatively small followings/influence who receive heavy-handed negative attention (like the Reddit bomber or people in academia like the N-word professor) but instances like these are fewer and far between and will probably decline over time as boomers leave the discourse (die).
I used to work at a few big media companies in a position that required a decent amount of public facing and had brushes with this sort of behavior in the past (people tweeting death threats at me, which I just brushed off because I understood what I signed up for and am not naive). These days I work for myself in a “blue collar” industry and mostly ignore social media, so I can’t really be cancelled.
I guess the point i’m trying to make is, if this is something you’re actually worried about, just
1; go work in an industry that lacks the highly educated, overstimulated, and mostly out of touch people that dominate 99% of the discourse but speak for 1% of the population
2; learn how to read the room (ie. listen more and talk less)
Big tech wanted everyone to have a voice and now they do. :)