Playing devils advocate for a second. What should her title be instead?One thing they need to update is that Camilla becomes Queen 'Consort' which is quite sexist.
Where I'm coming from, the husband of a female monarch doesn't get upgraded to the title of King, or King 'consort'. Usually stays as a Duke or a Prince. If we were being consistent to the conventions for the husband of a female monarch. Perhaps Camilla shouldn't be upgraded at all and simply remains a Duchess of some description.