I do believe this is zero-sum in that improving on one set of decisions means no applying the same rigor to others.
This is often seen in the form of very smart people also believing conspiracy theories or throwing their hands up around other massive issues. As an example, the "Rationalist crowd" has de-emphasized work on climate change mitigation in favor of more abstract work on AI safety.
To be clear, the argument (in rationalist circles) is not that climate change is no big deal, it's that there's already a ton of people worrying about it, so it is better to allocate some extra resources to underfunded problems.
Big business want people to buy things they don't need, with money they don't have to impress people they don't like
Politicians want people who will drink the cool-aid and follow what they (the politicians) say (and not what they do)
Religions... well, same.
And so all messages from advertisement, to movies, TV, narrative is about hijacking people's feelings and suppressing rationality. Common sense is no longer common, and doesn't make much sense.