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WIKI UPDATE:
After a staffer noticed images of Shiriman and Rectreem, we are now told not to upload anything that is basically not PC or could trigger people. So in order to keep things as they are, it is possible to have descriptions replaced, images censored or even Pokémon renamed.
I think the main point of the wiki is to have everything you need to know about a mon on one page and to have information easy to understand. They probably won't go through all the images, so it's possible that nothing is going to change but we never know.
They are not that thorough, they deleted the profile of the Shirime on the folklore wiki but let the others stay in the gallery.