Maybe a little bit more generic, but it is still has its uses. For example, I tend to place containers with crafter-specific filters inside houses of my crafters as a “general” storage and place request/output containers to prioritize input/output and control the flow of resources visually (no fiber in the bin for weaver => get more fiber). General containers have greater size and can hold many item types, so adding request containers does not outdate filtering them.
One typical use: vanilla containers classify both flowers and fiber as “plants”, making it hard to place a container for weaver/herbalist with surplus resource stock. And since I tend to have 30-100 flowers/fibers at the ready, that requires too much request containers - but only one or two chests.