Neil Perhaps if you had a child in a wheelchair, or born with indeterminate sex, or with one arm you would not treat this as an opportunity to make a joke.
It's not about "aiming" courses at anyone is it? It's about seeing who is signing up for courses, if certain groups are significantly under-represented and, if so, why.
As I understand it, the diversity questionnaire is separate from any other forms and is therefore anonymous. So how can anyone be "frightened". In any case, they can choose not to complete it. And, as has already been pointed out, people who use the internet, have store cards, etc., have probably disclosed far more information already than diversity questionnaires seek.
Telling people with whom you disagree that they are unintelligent, insensitive, arrogant, etc., seems a little over the top to me.
Incidentally, is it predominantly "certain ethnic minority families" who choose to sit near the car park rather than venture out into the countryside?