Overall, it is, frankly, a ludicrous statement from a mental health professional.
Presumably you are/were a patient and this statement may well be relevant to you or your symptoms, not 'everyone' Out of context its very difficult for anyone else to comment - ie, which antidepressants, for which conditions, what is meant by 'work' etc etc.
Anti-depressants are a vital medication for many thousands of people and allow them to function despite a wide range of mental health conditions. Its about as sensible as saying 'washing powder doesn't work' - it all depends which washing powder and what you are using it for.