Some Americans clearly must do this, but personally, I've never heard this in my life until I saw it on a YouTube video of a British person complaining how Americans pronounce words. Obviously, your experience may vary - it's a big country.
The transatlantic dispute over "aluminum/aluminium" seems minor when you consider how English is used globally. Even within Britain, there are considerable variations.
The one that gets me, as an American is nuclear vs nucular. Both have been in use verbally and written for decades... academics have adopted the former, even if the latter was more common in most early use. And that's just one, pretty recent example.
