Heyyy. I'm quite late to this topic, and so much has already said, but there are a spot that was only briefly touched upon that I'd like to voice my thought on.
I like to stress test things, so let's say this does happen and becomes well established. Especially younger ones, around my age (16) and younger will decide on an origin. My concern here is that, like theriotypes, there will be a strong sense and feeling of belonging to one origin. Similar to echo chamber, like prev. mentioned. It becomes very easy for newcomers to 'sort' themselves, and then confirm themselves over and over within that label.
It could create a barrier there, maybe similar to how many therians begin as eg. a wolf, only to figure out many years later that they're not a wolf. This maturity to figure out who you are comes with age and time, but making these splits between origins is similarly fickled. Without them, it compells individuals to read about longer descriptions of other beliefs and develop their own.
Of course it can make language within the community easier, but even so, it would likely be another label someone new flips through and chooses, based on their immediate thoughts regarding the topic.
Others on the other hand, might have not figured out what they believe in. Youngsters (defining it as around my age and younger) or others might fly in greeting those with (un)helpful thoughts on what you should or could believe in, again limiting the amount of introspection many might do.
Basically repeated myself here on one aspect, but it's difficult for me to keep my thoughts short haha.
~Greenleaf
Still thinking about it, I'd also like to add:
While some in the community have established their belief so often that it's tiresome to re-explain everything every time, many could use the opportunity to explain the beliefs they've established. This way, they can actively gain feedback and insight on aspects of it that make or don't make sense (stress testing <3). It also compells to further thought on whether this belief still holds true, or whether it has changed.
Could elaborate, but I believe it's clear enough what I mean.