The actual article is ambiguous. It really doesn't name any sociopathic behavior but kind of hints at it. Drop old friends and encourage others to drink to excess at company parties are the worst concrete behaviors I remember. But the article uses the adjective ruthless.

I can't make exact judgment about the guy from the article. But I'd judge the article itself to be something of a Rorschach test for reader. Sociopath or go-getter?