It's changed massively in recent decades.

Just because it had been used occasionally in the past is irrelevant (notably in metaphors or hyperbole). If anything, those literary uses strengthen the denotaton of the word.

1530s, "in a literal sense, according to the exact meaning of the word or words used," from literal + -ly

The dictionary (OED) is built around common usage and clearly shows common usage for a long time.

Just because illiterate Kardashians use it incorrectly doesn't mean the rest of us should.