Most of those missing items will be provided by the UK's Allies according to the enthusiasts - that really means the Americans. The Americans will do it because it helps to deflect some of the "going it alone" flak they get - plus RN hospitality is both famous and useful.
The proponents of the QE's always talk about the usefulness in times of all out war - they never talk about the damage being done to the 99% of normal operations.