Americans often shorten words, when compared to the English, saying it makes more sense to use fewer letters,  as it Color v Colour, and Check v Cheque,  etc., but sometimes they do the opposite and make words longer,  such as this example.

American : Something that 'they've gotten' wrong.
English: Something that 'they got' wrong.

I wonder why they feel it makes more sense to use more letters, when they say it makes more sense to use fewer letters.

What is America?

America is a continent containing various countries, such as Canada, United States, Mexico etc..

What is Britain?

Britain is an island group containing various countries, such as Scotland,  Wales,  England etc.