[derefr]

You could also take advantage of PG's function/field equivalence:

           -- equivalent to deref_jsonb('"sdfasdf"'::jsonb)
    select ('"sdfasdf"'::jsonb).deref_jsonb;

(I'd suggest naming the function "inner_text", for familiarity to JS devs :P)

[megous]

Oh my. :) There's always some quirky little thing to learn about PostgreSQL, lol.