Or perhaps aircrew should now become known as 'real aviators' ......
Those who wish to change the English language such that it has ambiguity between singular and plural (the use of the word 'they') are not good communicators. Those who fail to acknowledge that in order for an animal species (of which homo sapiens is one) to continue to exist there must be biological male and female members of the species which mate are denying the fundamental scientific basis for mammalian life. Yes, there are hermaphrodite animal species but currently they are not eligible for employment in the RAF.
It is absolutely right to respect lifestyle choices and individual preferences (as long as these do not offend and disadvantage others) and language should not be offensive but we must not corrupt our language such that it becomes ambiguous and factually and scientifically incorrect.