Again, when you KNOW that the dude hiding under Big Ideology is disappointed in himself and others, you can easily discern which parts of the rationalization are motivated by lower, unprincipled feelings.
After that, you can't look at Big Ideology the same way. It all feels thin and acrid.
One of the most scarcely appreciated virtues of Outgroup Demagogue is that he fucking rails on this shit. There's no Big Ideology excuses with Outgroup Demagogue. And it sounds so awesome to every person who's had to politely tolerate the miserable excuses and face-saving from high-fallutin' failures hiding inside Big Ideology. He just rips their asses.
He's a pathetic failure himself. But at least he doesn't act like a moralist about it -- he's just an obvious hypocrite. What a relief.