Americans, is it concerning your language is so easily influenced by a Brit on a sci-fi TV show? Day-tah?

Apparently Americans would say dah-tah up until Patrick Stuart showed you how to pronounce the word correctly on Star Trek.

Surely your language must be more firmly rooted than that.

Americans, is it concerning your language is so easily influenced by a Brit on a sci-fi TV show? Day-tah?
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