If a narrower search gets worlds that are disproportionately not what we actually want, that might be because we chose the wrong criteria, not that we searched too narrowly per se. A broader search would come up with worlds that are less tightly optimized for the search criteria, but they might be less tightly optimized by simply being bad.

Can you provide any support for the notion that in general, a narrower search comes up with a higher proportion of bad worlds?

The metabolically privileged don't believe in metabolic privilege, since they are able to lose weight by trying!

Some of us do believe in it since we are able to stay very thin without trying. I have never dieted and never needed to.

But, we probably don't post very much on diet blogs.

I come from a family of thin people who eat fairly unhealthily but are quite active. When I first stopped living with my parents, I basically stopped exercising and ate even more unhealthily. I became very unfit in the sense of e.g., not being able to run a block without getting out of breath, but gained very little weight. So I figure the causation is probably not mainly exercise -> thinness, but more on the lines of genes -> (thinness & athleticism) or genes -> thinness -> athleticism.