You join those dots like the arrival of "Avatarism" is something obvious and inevitable, but reading that blog post doesn't give me that idea at all. Instead, it makes me think the author is way, way too deep into a too-long list of very niche technical and sociological obsessions.
A quote:
What is Avatarism?
Avatarism is a movement to recognize and protect the fundamental human right of freedom of form
Yeah, except that right doesn't exist, and no-one thinks it exists. At all.
The idea that an entire civilisation is going to agree to all use VR goggles full time to preserve some non-existent "right" for a very small number of weirdoes to only ever be seen as their cartoon fantasy version is, frankly, laughable.