There was a particularly childish fight between Taleb and Nate Silver about a year ago on Twitter. I couldn't stand following either of them after that and I haven't looked back.
Wasn't there a similarly childish fight between Taleb and Pinker, too? That kind of thing is embarrassing. I haven't read Taleb but I enjoy the occasional Pinker and don't want to see him engaged in pointless ego fights.
I used to think highly of Pinker, but IMHO in his discussions with Taleb he lost credibility. The discussions were not pointless ego fights, but Taleb exposed some of Pinker's main claims as pseudoscience and Pinker haven't really recovered.