The reason why Camilla could never be Queen and might not get the opportunity.

1) No teh worlds not gonna end
2) The Head of state used to have discretionary power solely to decide on teh use of nuclear weapons, these were then devolved on consultation to the Prime Minister and war cabinet.
3) Crown opinions are refferred through teh council of state in which those members of teh Royasl family on the civil list have input.
4) As such if the head of state has input, the deputy (heir apparent) agrees then the only person who can succeed to teh corwn without being indited is the serving military officer not involved in teh Campaign (Duke of Cambridge). To save the English crown and with it the Commonwealth of Uk started nations, a referendum reratifying the institution and codifying the constitution with secession of wales and scotland should they so wish by referendum is the logical step to save the monarchy.
5) Respecting teh history of 1997 might still save the crown and teh Express article sets the process out.