Take the following as truth: I am not entirely in agreement with the RHD treatment, for, personally, I believe that youth has lately appeared more and more often in context like youth center, youth rehabilitation , etc., where the context is clearly common-gender, and the foregoing is merely set out as a warning to those who try to predict what lexicographers are likely to do.
Then the following statement: "The phrase youth has entered the regular vocabulary in a many non gender specific ways." is true, false, or inconclusive?
Answer: False