I'll second the idea that these kids (literal kids, kids in adult bodies) don't believe they're special at all. Usually, the louder and more often someone insists something is true, the less likely they are to believe it themselves. All the weirdest, attention-grabbingest kids I knew growing up had permissive, quasi-absent parents and zero emotional support. I think if you bring a kid up believing they're a worthwhile person, encouraging their productive hobbies, and enabling them to socialize, they probably won't turn out to be a weirdo.
On a note about weirdos, this might be the greatest evidence I've ever seen against the argument that otherkin are just mentally ill. A real crazy person, I think, would just eat the worms and not tell the internet about it because it makes sense to them.
