Say you’re right. What do you do with that information if you’re running a campaign? Those are the circumstances. You can’t change them, but you want to win.
For me, I understand why you feel that way, but I’m not really in agreement. I think your average voter knows good and well that politicians are generally full of shit. Unfortunately, they feel trapped by the system. This makes them either choose “the lesser evil” or give up entirely. Both of those reactions are understandable given the context. This dynamic has not improved the context.
The lesser evil gets more evil every cycle. Foreign policy is the least likely to change between administrations. We are watching how an executive can wield power in spite of the courts and legislature.