Before his conversion to Roman Catholicism Gavin Ashenden was an Anglican priest and bishop as well as former Chaplain to the Queen. I fear his concerns are real and true. From Christian Today:
It used to be the fashion to address a monarch as His or Her ‘Most Christian Majesty’. In the case of Elizabeth II, that was the most appropriate description. People have discussed her longevity, her family, her good judgement; but behind the length of her reign, and the reason why she found herself so dearly loved, was her Christian character.
Alongside a life constructed and sculpted by faith is the congruence that the demise of Christian faith in the public sphere may take place in parallel to her own personal demise…
As the society she ruled over constitutionally grew more heterodox and hedonistic, the dignity and integrity that she embodied both personally and constitutionally resonated with a contrasting moral and existential value which was nurtured by her relationship with God – her sense of vocation as his servant, placed within the royal family to serve both him and her nation – and her love of Christ, whose Spirit renewed her daily.
The mourning that will accompany her passing will be a grief not only for a remarkable woman, a treasured mother, a dignified grandmother and a much-loved Queen, it will also include a sorrow for the passing of a Christianised culture whose deepest and most noble virtues she represented and embodied. In every sense it is true to say of her, we shall not see her like again.