This is an example of default bias. By your logic, one could make the argument that we shouldn't hold the president accountable for lies he tells because it's generally accepted that all politicians lie. Regardless of your political leanings, should that ever, ever be true?
That argument simply doesn't hold up. Calling out specific, concrete bad behavior should never be defended with "everybody does it." Sure, there's argument to be made that seeking to destroy Facebook is an overreaction, but that's different than arguing that everybody does it, which completely excuses that bad behavior.
