That happens with people with university degrees too.
The problem is that many people with degrees, both in this thread and out of it, seem to have some form of superiority complex.
When you have to start working with people from all walks of life, including those who went to technikons, your degree means squat and you actually have to start proving yourself. That snobbishness actually motivates those with 'lower level' qualifications to start outshining you.
PS: I have a degree and have long ago stopped caring about the fact that I have one. Means nothing after your first job, and is only useful in getting you an interview - which isn't really an advantage over those with technical diplomas as they don't have an issue landing interviews either...