"Appeared in Epstein's flight logs" = "went on his plane to a TED meeting in 2002", and "has been photographed socializing with him" = "was at a few parties where Epstein 'socialized' with everyone famous he could find", so far as I can tell. From Pinker's account -- which obviously might be self-serving -- they disliked one another. What do you think Pinker did that he could reasonably have been expected not to do, given the information available to him at the time?
Celebrities of various kinds interact with each other, that's how that works.
If you were invited to a conference and the CEO invited you on his plane because you had something interesting to say, and 10 years later we find he was a rapist, do we cancel you?
If you're going to tell me that Pinker was 'on rape island sleeping with teens girls' - then obviously that's another matter, cancel away, but as far as I know that's not the case.
This is exactly the kind of petty, toxic, vindictive posturing exemplary of bad cancel culture.