That sounds a bit naturalist fallacy - just because it is selected for doesn't mean it is ideal. Legacy is perfectly capable of leaving maladaption. The inertia can and has worked against them too.

For instance it could have been from the history of human group hunting, warfare that sort of cohesion served better than intellectual ability in the short term.

But under modern conditions the utility would invert - muscle power is basically worthless compared to machines for labor for one. Not falling for the stupid delusions of the day can give a lead of centuries.

Besides shouldn't proper deep thinkers should be able to weigh risks of ideologies? The unthinking masses would continue along with disaster while critical thinkere would say "stop!".