FWIW, I've lived with people whose actual preferred level of mess-to-live-in was different.

That is, it wasn't that everyone agreed that X level of neatness was better but some people didn't feel like doing the work, it was that person A wanted X level of neatness and was uncomfortable at Y level, and person B wanted Y level of neatness and was uncomfortable at X level.

At least, that's how it seemed to me. I suppose if I started out with a stronger prior in favor of the people-prefer-X-level-of-neatness theory, I might find it more plausible that B was either signaling dishonestly or genuinely unaware of their own preferences. (The latter was A's theory about B, expressed as "If they just live in a neat house for a while they'll see how much better it is!")

That said, both X and Y were noticeably cleaner than the scavenging-arthropods stage.