I'd also prefer a stricter definition of "literally", but here we are and there's little chance we can turn back the clock. According to Merriam-Webster, most dictionaries, including the OED, recognize the "metaphoric or intensifying sense of the word literally"[1], and this is not even a recent development. (The situation for enormity is similar.)

[1] https://www.merriam-webster.com/words-at-play/misuse-of-lite...