nothing in that statement implies that crashing was not preceded by normal, controlled flight. the term "crash" has no innate implication besides violent impact. though, yes, in actual use it often implies "accidental" and/or "uncontrolled".
Specifically, CFIT is a subset of "crashing into a mountain" where the aircraft was under control all the way until terminal lithobraking. It's implied the last part is usually unexpected, otherwise it would be avoided.