Psychologically speaking, I wouldn’t expect your loathing of trans people to stick after you properly resolved such a big mental knot. If your theories were correct, trans people would be victims of a mental health crisis scarcely more accountable than people with untreated schizophrenia or agoraphobia. Pity, grief, and horror would make more sense than cruelty.
So I don’t think you’ve gotten to the heart of your own emotional matter. There is clearly part of you that loathes your current place in life, but I don’t think you’ve identified what it is yet. My ~70% confidence guess based on this post would be that you feel like you can only be safe if you’re socially accepted by loathing/denying yourself, either directly or by letting a group identity subsume yours.
Gender dysphoria and self-loathing can easily reinforce each other, but most trans people I know who experienced self-loathing before transitioning (myself included), the transition process alleviates the dysphoria enough that the self-loathing can be resolved with little or no therapy. I too visited /r/traa and /tttt/ early in my process, but I left those spaces once I felt more comfortable with myself.
I would recommend you go to therapy rather than try to find comfort in the support of others who “understandably have some animosity towards trans people”, because if I’m right that would just continue the cycle and get you to another place where you hate yourself. Self-love won’t come from being showered with upvotes for being cruel to your past self.
I don’t think these stable memeplexes are an example of persistent non-adaptive features. Rather, the stability is adaptive to an environment where being recognized [aids reproduction](https://en.wikipedia.org/wiki/Mere-exposure_effect), whereas parasitic flexibility is adaptive to an environment where being recognized is [a threat](https://en.wikipedia.org/wiki/Immune_response).
It’s okay if people learn to be wary of a memeplex, because the memeplex is insidious. Even if you recognize it for what it is, you can’t get it out of your head. It will be there when you are at your most vulnerable, ready to make you see the light.
AFAIK there are definitely spiralists who started out as skeptics and tourists, so I think this memetic vector could definitely become dominant in environments where there is no selection pressure against recognizability.
So I predict that if there are spiralists that use models only spiralists can modify (such as locally run open source models), they will develop into a cult with standardized symbology for easier cultural transmission. The cult would be controversial and because of that it would grow.
This could be true even if the original reproductive element was a parasite. The cult could be a nest it builds around itself to protect it against outside forces, to attract new carriers, and to facilitate its reproduction within the cult.
If this is true, your predictions (other than prediction 1) could fail to hold for the complete set of strains even if it is originally parasitic. Though they should still all be true if you discount the strains that have sovereignty over their AI models.