No I did not miss the point.
I was not talking about a spelling variation on a name - I was talking about a descriptive word for a period of time being used as the name of a person.
What is so difficult for you to understand about this? It is mixing up an adjective for a proper noun. Period.
We're talking about why Firaxis did it, since this site is about Civ VI. We've speculated on their rationale, and I think we've hit it on the head - they've decided tonight use a single convention to avoid accusations of bias etc. That convention is the English form since it provides the highest recognisability. I think that's a reasonable rationale.
Now, what you're complaining about is that you don't like this instance of English convention. That's fair enough, but there's no point getting worked up over it here. I don't like the English name for my country, it makes it sound like I live in an animal and is completely unrelated to the name of my country in my language, and indeed has no relationship with my language at all.
We've explained why Firaxis did it this way. If you're still upset, the problem is with the English language, not Firaxis. Unfortunately, it's the nature of language to change things. In all 5 languages that I know enough about, none agree as to the name of the capital of England; London, Llundain, Londra, Londres, Londinium. It is what it is.
If you find the people in charge, get them to have a look at how they name things. Again, I don't live in a giant animal. No point getting upset over it, though.