Unfortunately, as other posters have said, 'aural' is seen too often, by both teachers and students, as a rather problematic 'add-on' to the main business of learning pieces and scales.
But, as Oboist said, MUSICIANSHIP is so important - and, I feel, should be the main aim of any music lesson.
As someone I revere and respect once said, 'Before we rear instrumentalists...we should first rear musicians'.
I was someone who was able to reach a grade 7 standard of piano playing without learning a thimble-ful of MUSIC. I was just learning where to put my fingers - guessing at rhythm, not understanding the structure of scales, petrified of aural. I reckon I cannot be the only person like this! I also feel sure that it is quite possible to achieve grade 8 without actually being A MUSICIAN.
I do perceive though, that the aural tests devised by the AB do not always follow a particularly logical progression. As an experienced musicianship teacher, there are some aspects of higher grade tests that are easier than some found in lower grades. And why is sight-singing not started at Grade 1???
They also DO seem to be very 'separate' from the other components of the exam and do not necessarily relate to the work covered in the other areas, which may be another reason why they can be seen to be an irrelevant nuisance!
So, basically, I think it's down to this - do you want to be an instrumentalist or a musician??? I do think that it's something that the AB needs to address. Their exams are exemplary in many ways, but as with all exams (I see this with SATS in schools!) there is a danger of the teacher teaching to the test and nothing else.
If only there was a systematic programme of musicianship training running alongside the instrumental work...my colleagues and I are constantly coming across under- and post-graduate music students who cannot sight-sing a very simple melody and/or who have a weak sense of pulse. So something is VERY WRONG with the system here.
Come on, AB, time to open discussions about this major problem!!