Her Majesty Queen Elizabeth is concerned.
Unlike other, lesser, 80-plus-year-old-granny-corgi-loving-billionaires with barely 100 days to plan her grandson and heir's wedding, our dear sovereign has to consider history, past and future.
Apparently, there have been 11 attempts to change the 1701 succession laws, enacted under the reign of Dutch-born William of Orange, since 1981. The Act of Settlement does more, however, than limit the right of female heirs to inherit the throne:
"The Act of Settlement not only addressed the dynastic and religious aspects of succession, it also further restricted the powers and prerogatives of the Crown."
William III (r.1689-1702) & Mary II (r.1689-1694)
"The Act of Settlement reinforced the Bill of Rights, in that it strengthened the principle that government was undertaken by the Sovereign and his or her constitutional advisers (i.e. his or her Ministers), not by the Sovereign and any personal advisers whom he or she happened to choose."
There are also serious implications for the Church of England, its relationship to the state and of course, The Monarchy. (Damn Jacobites.)