Re: But it isn't in English
This issue was raised in the early days. If there were two English versions of each article, 99% of each pair of articles would be identical - can you imagine trying to keep them in sync with each other?
It was decided to have a single English version and to alter the spelling based on the subject of the article (e.g. the article on Winston Churchill would use International English, the article on John F Kennedy would use US English spelling). If there is no particular geographic or cultural focus to the article, it stays in the version in which it was first written. In the case of the five-millionth article, it is about an Australian shrub so it would use the International English spelling.