He didn't get discriminated against. He got rejected from a talent show because talking about a disability isn't a talent. I'm sure the deaf girl had something cool and entertaining she did.
It takes zero talent and only a minimum of effort to do what he did. And he had absolutely nothing lined up to follow that powerpoint with if he'd been allowed past auditions.
Surely he'd know that contestants have to keep coming up with new and more impressive acts to continue advancing through the rounds?
And update:
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"All the other acts will fade away. But my antics entertain for a lifetime!"
But he's not bitter.