I filled mine in yesterday and will be absolutely gutted to fail on that. I would much rather fail at the actual first stage rather than a questionnaire which is the only part of the entire process that you can't go back and work hard on while you wait for your year to be up before you can re-apply again.
There is already a similar excercise during the motivation paper which should be enough or they could incorporate this questionnaire into that and have it as so much percent of your final mark.
I do find it hard to accept that what type of person a computer thinks you are decides every applicants future and how far they progress.