Your previous answers do make a valid point. But that's because their own comprehension is in tact and "normal".
But unfortunately, people with mental illness, learning disabilities,are far more vulnerable, because they do not have the same understanding, and thereby are always at risk of being exploited.
Their framework of life is far different to healthy people. They believe and trust as a child does.
But because they are considered to be of an adult age, the penalties for exploiting them are virtually non existent.
Yes many people who do not have mental or learning disabilities make fools of themselves. But they do do it knowing the consequences, ridicule, and choose to exploit themselves nonetheless.
But mental illness, learning disability,does not give the same thought of reasoning, or contradictions.
If a blind man went to cross the road in front of a lorry, would a seeing pedestrian help him to do the safest thing, and show him the way? Yes, most decent seeing people would. The only difference is, blindness can be seen by others. Mental illness, and learning disability does not carry a white stick, wear dark glasses, have a guide dog, or wear a bandage.
The stigma of mental illness, mental disability is not as severe or ostracized as it once was.
But there is still a long way to go.
And it's still used as a source of entertainment and mockery. Not only on the reality shows, but also in life generally. Through ignorance, fear, lack of thought, selfish gain, etc.
Having said that, if a basic care and protection package is placed and followed through, and the interests and welfare of the individual with a disability made the primary concern, then and only then can it be a worthwhile cause. That benefits the individual. As in the case of Susan Boyle. Though such successes are rare.
All participants of the reality shows, perform for the producers, well before being chosen to then appear on the televised auditions on stage. And this is why it hits below the belt. When their capabilities are well known beforehand, yet still they're chosen to perform for the public.
But of course, if all people with a mental illness, or learning disability were denied the right to perform because of their vulnerability, then that could also be seen and viewed as discrimination.
It just needs to be fair. And common sense used. But life is never fair. And common sense goes out of the window, when it comes to entertainment, and viewing figures.
And there by the grace go the rest of us.