Coming across information isn't the same as:

- having the emotional energy reserves left to act on it

- fully understanding the repercussions of the thing

- feeling like your actions in this case will have any affect

- many other reasons you can't stay consistent from an outsiders perspective

You're trying to apply an objective measure of reality to everyone else: if they disagree with X, they must therefore also disagree with Y, otherwise they shouldn't act on X. It's an unreasonable expectation of perfect action.