A little breath of sanity in political discourse. How refreshing.

Value is subjective. What I value isn't exactly what you value. That's the start of a meaningful political discussion, instead of all this piffle about what "we" want.

And your point about potential benefits of self and thereby other deception in politics makes sense to me, though it's unclear that delusion as a policy will be, on balance, more effective. But that's an empirical and contextual matter, not one that's solved by sitting around thinking about it.

But if you want to talk politics of these differing subjective values, I'd recommend starting with the premise that delusion is at least unhelpful in modeling and understanding politics, whatever use it might have as a tool in politics itself.