> What's the argument for banning one social media and not another

Google’s argument would be Facebook has shown good-faith efforts to respond to the problem, e.g. by freezing Trump. Parler didn’t or couldn’t. (Counterfactual: they weren’t given much time.)

In reality, a greater fraction of Parler’s users are engaging in criminal activity. By virtue of market share. (I reckon the number of problem users is higher at Facebook. Again by virtue of size.) And disconnecting hundreds of millions of voters from their kids’ photos is a good way to get slapped.

Great arguments for breaking up Facebook.