Did the RAF want to eliminate Joint Force Harrier?
Short answerNot necessarily; the RAF had institutional reasons to keep a third fast-jet force and replace Harrier gradually with F-35B.
NotesThe force-structure argument does not support the idea that the RAF simply wanted Harrier gone. Retaining the type could preserve a third fast-jet community while Typhoon replaced earlier aircraft. F-35B could then replace Harrier on a planned schedule. Early retirement instead compressed the British fast-jet force into Typhoon and F-35B fleets.