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I am really trying here, ok?
(feddit.org)
GIF of the breakdancing lady at the olympics with the caption "Me explaining mass spectrometry"
But it is not about originality.
People watch the Olympics to see peak humans perform amazing feats of athleticism. It is a competition of the ages spread over all countries.
If someone performs something every regular person would be capable of, especially on purpose, it mocks the sport and the Olympic competition in general.
Sorry to break it to you but it factually IS about originality. That's one of the categories the judges for this sport specifically rate on according to the olympics, or should at least, it's obvious they didn't in this instance.
Here's some sites that specify originality is one of their 5 scoring categories.