The Australian-Vietnamese continuum is well-explained by Australia being the geographically nearest region which can supply native English language teachers to English language learners in Vietnam, rather than by any intrinsic phonetic resemblance between Vietnamese and Australian English.
Those seem like standard needs for any kind of CRUD app, so I would call this approach pretty useful. Currently I do something similar by keeping a private primary uuidv7 key with a btree index (a sortable index), and a separate public uuidv4 with a hash index (a lookup index), which is a workable but annoying arrangement. This solution achieves the same effect and is simpler.