Well there are 2 rejection clause mentioned.
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The text or photo contain abuse, ridicule, or harrassment of a specific person or group.
This is probably because someone believe its using 3rd party foto. This is why people have been asked not to share the original photo elsewhere before nomination approved eventhough they might be the original owner.
Example where using 3rd party photo result in rejection
Got an unfair warning for this -
The submission is believed to be a fake
Well location wise need more prove as per i said before