It’s not that the German alphabet is officially gaining a new letter in the form of an upper-case Eszett (that funny ß thing they use in some words instead of ss – it never had an official upper-case because no German words started with it and apparently all-caps isn’t, or wasn’t, that much of a thing until all the government forms that had to be all-caps proliferated forcing the Großmann family to be confused with the Grossmann family).
It’s that these things are decided by a German Spelling Council. Or rather, the German Spelling Council. Which includes rules about whether or not words dragged into German from elsewhere can have their spelling Germanized or not.
The French have a similar group that, the last I looked, was still fighting a rearguard action against offenses against Frenchness such as “le hamburger” and trying to force French speakers to stick to their own language and not go borrowing willy-nilly from the rest of the world.
English meanwhile just ploughs on merrily appropriating anything people feel like, and letting a combination of usage and reference material standardize the spelling for it. A true bottom-up (or at least keyboard-up) solution to balancing language adaptability with the need to be clearly understood.
More to the point, the major English-speaking countries of the world (England, the USA, and to a lesser extent because of their longer history as colonies, Canada and Australia (no, New Zealand isn’t ‘major’ yet, but it’s getting there)) have tended to be more inclined to view their people as citizens who can make their own decisions in most things than as subjects who need to be told what to do. Despite the depredations of power-hungry bureaucrats and politicians, all these nations are still in many ways more free than almost the entirety of the rest of the world. None of us have official bodies telling us what words we can use or what the proper spelling of new words is.
It’s the little things like this that point to the mindset under them. Or as Pratchett memorably put it in Small Gods: “Sheep are stupid and have to be driven. But goats are intelligent, and need to be led.” European nations treat their people like sheep. The USA treats its people more like goats, although the would-be shepherds keep pushing. Pratchett did not add that trying to drive goats will often earn the would-be driver a kick in the nadgers, but it’s worth remembering. Because Americans are goats. We can be led by the right people for the right reasons. Try to drive us, and you will find your family jewels suffering.