You are confounding two different things: theory vs reality.
Spanish speaking natives, or expert Spanish speakers know that. Most Americans of any other ethnicity don't.
The difference between the spoken word and the written word also plays a role.
99.9% of us don't know and don't care. Don't be a jerk.
99.9% of us don’t know and don’t care. Don’t be a jerk.
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Like I said in the original reply to the post, I meant no offense. I was just offering a little linguistic trivia.
Being “a jerk” was farthest from my intention.