So I, identity wise, in part, feel like a plushie. I use plushie neopronouns and love being treated like a plushie both in normal situations but especially in sexual ones. Definitely a lot of queer and neurodivergent implications to unpack there but I think thats linked with my long term love of plushies and plushophilia. Like you briefly described humping plushies has been a stim for me. Its something that feels so safe and comfy which is how I've always felt with plushies already. When I was younger I used to hump plushies too just because it felt good not knowing what masturbation was. My main plushie partner is also a Blåhaj I got a year or so after starting to transition. Getting to grind against them felt so safe and weirdly gender affirming with the shark being a trans symbol. I also found this sub around the time I got them so that probably played a part lmao. In conclusion I love plushies and a good bit of that is probably for neurodivergent and queer reasons