It makes zero sense that the room people associate with hygiene and the room people defecate in is for a majority of people the same room

my brothers house second bathroom was split into two with one being a sink and toilet and a shower in the room with the laundry units. Its actually great as it virtually give you three bathrooms in the sense someone can shower while another person is using the toilet. well I guess that can always be done but uh. its better.