If you are writing about the British royal family, the head of it, the monarch, has an role in government. The monarch more or less makes every decision of the parliament, the cabinet, and the prime minister happen by giving their assent. Of course it has been a century or two since the monarch has not given their assent to the will of the government.
I note that most countries in the world have a separate head of government, like a prime minister, who runs the government and rules the country, and head of state, such as a president or a monarch, who is the living symbol of the country. Countries where the head of government and head of state are the same person, like the president of the USA, or the King of Saudi Arabia, are a minority. Which doesn't mean that the many heads of state who are not heads of government have no governmental functions at all.
Yeah we know. Still gonna be difficult to be head of state of a state that no longer exists or sovereign of a nation that's no longer sovereign.
Fair enough. Not that I would think it particularly likely that French would evolve in exactly that direction even though I wouldn't be too surprised for it to incorporate some English influences. But, you can never know![]()
Don't worry I wasn't too serious about that

But I could see Lower Decks using that explanation....