Looking at the 2018 Therian forum post and spotting some conflicting things, which honestly I'm not all that surprised about, but probably worth mentioning.
"Fictionkin" is and continues to be a subject of pretty contentious debate afaik, but was used in and outside of the community enough for it to at least get an entry in this 2018 post by a member of a therian forum here:
"Fictionkin: A person that identifies as being, in part or whole (non-physically), one or more species and/or characters shown in media on an integral and personal level. Some fictionkin are character-specific, such as Sonic the Hedgehog, while others identify as a fictional species, like a non-specific Chao or a Pokémon. Fictionkin cannot choose their kintypes.
Kinnie: Used derogatorily toward younger members of the Alterhuman community. Used on Tumblr as a synonym to Otherkin.
Tumblrkin: A person usually from Tumblr who has done no research on otherkinity, and claims to be kin just for the ‘aesthetic’, to jump on the bandwagon, or otherwise. They usually have kintype lists of 100+ and the term is used derogatorily.
Species Dysphoria: The experience of dysphoria (discomfort, depression, anxiety or similar based around one’s self) associated with the feeling that one's body is of the wrong species. Not all therians and otherkin experience this." ---------------------------
"User ArchieAce: Edited. Any more problems and I'd love to fix them! I don't experience these myself nor do astral spiritual work, but an aural shift is your aura changing form (unsure how that is done or detected), a spiritual shift is your astral body changing, e.g. on the astral plane, while a mental shift is thinking alike their species/whatever they are."
By this person's definition and what they've written on their guide, using the term fictionkin to describe thinking you're Sans the Skeleton on the astral plane would be accurate, and not necessarily offensive to them. I'm not 100% sure if this is because of cultural shift or if it was a subsection of this community that was originally more accepting of it.
I find it interesting to see the overt negative opinions they have of people using the term specifically on tumblr, and I have a feeling whoever made this guide wasn't as aware of the 4chan involvement. You can also get a glimpse of why 4chan picked this stuff as a tool for transphobic rhetoric in the first place, specifically with the entries that borrow terms such as dysphoria.
Re: Unpopular Opinion...
Looking at the 2018 Therian forum post and spotting some conflicting things, which honestly I'm not all that surprised about, but probably worth mentioning.
"Fictionkin" is and continues to be a subject of pretty contentious debate afaik, but was used in and outside of the community enough for it to at least get an entry in this 2018 post by a member of a therian forum here:
"Fictionkin: A person that identifies as being, in part or whole (non-physically), one or more species and/or characters shown in media on an integral and personal level. Some fictionkin are character-specific, such as Sonic the Hedgehog, while others identify as a fictional species, like a non-specific Chao or a Pokémon. Fictionkin cannot choose their kintypes.
Kinnie: Used derogatorily toward younger members of the Alterhuman community. Used on Tumblr as a synonym to Otherkin.
Tumblrkin: A person usually from Tumblr who has done no research on otherkinity, and claims to be kin just for the ‘aesthetic’, to jump on the bandwagon, or otherwise. They usually have kintype lists of 100+ and the term is used derogatorily.
Species Dysphoria: The experience of dysphoria (discomfort, depression, anxiety or similar based around one’s self) associated with the feeling that one's body is of the wrong species. Not all therians and otherkin experience this."
---------------------------
"User ArchieAce: Edited. Any more problems and I'd love to fix them! I don't experience these myself nor do astral spiritual work, but an aural shift is your aura changing form (unsure how that is done or detected), a spiritual shift is your astral body changing, e.g. on the astral plane, while a mental shift is thinking alike their species/whatever they are."
By this person's definition and what they've written on their guide, using the term fictionkin to describe thinking you're Sans the Skeleton on the astral plane would be accurate, and not necessarily offensive to them. I'm not 100% sure if this is because of cultural shift or if it was a subsection of this community that was originally more accepting of it.
I find it interesting to see the overt negative opinions they have of people using the term specifically on tumblr, and I have a feeling whoever made this guide wasn't as aware of the 4chan involvement. You can also get a glimpse of why 4chan picked this stuff as a tool for transphobic rhetoric in the first place, specifically with the entries that borrow terms such as dysphoria.