That all makes a lot of sense. I had partly but not completely joined those dots previously when I heard about "otherkin". Wikipedia can be hit and miss but the info on here seems pretty helpful.... and pretty familiar (also links to furries, which I had thought of immediately when I was told about otherkin)
Otherkin
When I found out about it, I immediately thought of my daughter's online persona (name rather than avatar, but same thing in essence) because it refers to an animal. My concern was that otherkin people are apparently getting surgery ATM to match their identity. It's all linked.
Luckily, she and her sister both thought it sounded bonkers. We all agreed that it sounded like a mental illness where people wanted to change their real life bodies to match their online lives.
This...
Imaginative, sensitive souls who are a little 'different' can easily feel more at home in imaginary worlds
...is exactly why I brought it up as a conversation.
It was helpful that it seemed so different from gender identity in her eyes. But obviously I shared it because of the shared principle of all of this.
It sounds like the person you know is getting great comfort from his approach to blend his online and real life lives..... for now..... I can imagine you must be extremely worried.
Back to gender identity, I listened to a really interesting chat between Buck Angel and Blair White some time ago (posted on another thread) and they were both very clear on it being a mental illness where reassignment surgery had to be the absolute last resort. I guess they wouldn't necessarily know what true neutral therapy looks like (Buck said he had therapy, Blair said she did not) but they are both clear that children should not no anything medical. They were also both clear that they wished that their own dysphoria could have been resolved without medical interventions (and the lifelong impact of these).
NB I don't agree with everything that they both say, such as Buck saying that gay men should try her vagina before they say no (FFS, it's the girldick issue again - just the other way around) but I do on the above re dysphoria.