To liberal ideologues and Democratic partisans, Mark Zuckerberg is, as the anti-Trump website The Bulwark put it, "a surrender monkey." They see his decision to end Meta's third-party "fact-checking" program as just the latest example of cynical big-business types trying to make peace with president-elect Donald Trump because they fear his wrath. Non-leftists see it differently. They view Zuckerberg's move, similar to signals from some corporate media publishers like Jeff Bezos, as an indication that such people understand that it is in their interests to move to the center. But both explanations can be correct. Zuckerberg's and Bezos's only allegiance...