Such the simplicity actually are in line with how people live their lives in modern era. Directness, cleanliness, and things can never be just neglected when we are observing how such the designers or constructors of the vanities think about their design ideas.
Such a feature deals with how much the designer’s creativity is expressed into the manifestation of each vanity he or she creates. I am not saying if modern-styled vanities are the products of the lack of creativity of the designers. But, every minimal pattern applied in the design of a vanity in modern style simply is an indicator that modern-styled vanities are large and made simple, i.e. manifestations.
Among all industrial materials, commonly things like vinyl and plywood are quite preferable, primarily due to the affordable prices. Stainless-steel and aluminum are two other industrial materials that are also applicable but they are quite costly, at least more lavish than the other industrial materials. Nevertheless, many modern vanities are still made by involving some natural/traditional materials, like some kinds of hard woods.