It emphasizes problems with the modern family. They don't try to preserve their genes the same ways because they no longer see other tribes/races as something to preserve against, aka becoming multiculturalist/egalitarian/naive idiots.
Ever time you criticize the Royal Family on behalf of this, remember this is equally the problem on behalf of most modern families. This is what we inevitably have gotten. For those who also proclaim about race, remember the political office of the republic of the US was also held a nig nog. This monarchy has yet to have a nig nog sovereign, but I wouldn't applaud this as good grounds for the rest of the kingdom. This marriage will probably become a deep fracture point on monarchy if people change their mind about race and equality and multiculturalism….
The responsibility falls to the sovereign to look over the state, but the state inevitably falls from that kind of grace… especially with the (((media))) and what we see happening with every institution, including monarchy, with this modernism. The worst part is these institutions try to make the celebrities out of the royals, perhaps the worst thing you can do but also the worst thing for them if the royals become populists one day.
TL;DR: Society is being subverted on all levels by an international clique.