1.
Architecture is semiotic, delayed, planned. The designer is not the builder. Thus the end products of most design processes swirl towards the shared vocabulary of all contractors, builders, interior designers, architectural photographers, landscape designers -- the clear finish, the solid detail, the textured material, etc. Hygiene, by default, is a definition of demarcation, defined in negation, and thus shareable. "Not dirty", "not mottled", etc. Cleanliness is a (relatively) universal concept, while creativity, or an arbitrary perturbance, disturbance, alteration of logic, etc, is not. When the least common denominator of the shared language of design is cleanliness, then architects' creations will also fall inevitably towards this sanitized overlap.