Instinct Triggerer Theory

First of all, this is only a guess, not a definitive fact and is only supported by what I believe. It isn't meant to hurt anyone or insult anyone, only to share my thoughts and theories. All of these ideas are original and have not copied anyone else's ideas, if I have, by coincidence, please let me know.
My main point is that Therianthropy has to do with mental abnormality and/or the primordial animal instinct. I will split this into two different parts, the 'Evolution Theory' and the 'Trauma Theory' which I will bind together at the end to explain the 'Instinct Triggerer Theory'
So first off, I would like to define what the Evolution Theory is. Its explanation to Therianthropy that is that humans and animals originated from the same source and are closely connected on the DNA level, meaning that some of the human population, also known as Therians today can be mentally affected by this biological connection. So far I haven't found any definitive pieces of evidences that support this but it is something that we can connect to some level to the Uncanny Valley. The Uncanny Valley is an effect that causes humans to fear anything that resembles a human but is not fully human. Anything further from that point and anything closer to humans from that point doesn't cause fear. It is collective, meaning that a vast majority experiences this feeling without having had any connection between each other. It is simply something stored biologically in every single human being's consciousness. Although even the Uncanny Valley is only a hypothesized idea, the resemblance in the genetical or collective imprint can be related. It's interesting to think that deep inside the subconsciousness, humans correlate to animals. Due to the long-term evolution that humans undergo, gradually this instinct has been hidden and dissolved, but sometimes it may be triggered.
This connects to my second idea, the Trauma Theory. Most Therians I have met in reality and talked to online have some kind of suffering, whether they experience it now or have experienced it in the past. I think that this mental suffering and experience has lead to certain degrees of trauma which call for the primordial animal instinct to protect the consciousness. This is when the instinct emerges and separates from the subconsciousness, blending into the consciousness of individuals. So why does this trauma call upon this distant instinct? I believe it is because in the ancient times, the animal instinct was to fight, hunt and protect, making the impression that this instinct can provide power for the individual. Then, it is only natural that the animal side starts appearing. Shifts, then, following this idea, would be the process of the formerly subconscious identity trying to protect the human identity. It is relatable to the concept of Schizophrenia, the separation of identity due to excessive trauma. The separate identities created by Schizophrenia help the main identity carry mental burden and experience the pain for the main identity instead. I believe that this animal instinct does similar things, protecting the human identity by taking on the suffering. Both can be seen as a defensive mechanism of the human mind, triggered when harm is experienced. It can also be related to the generally well-accepted knowledge that first experiences of Therianthropy are during the times of puberty, and in most people's experiences, middle school and high school, times of puberty, are the most traumatic because of bullying and academic pressure etc. It is even statistically supported that puberty can be very upsetting and hurtful.
In conclusion, the Instinct Triggerer Theory is a combination, or rather umbrella for the two theories. It is the idea that a collective, biological and subconscious animal imprint within the human mind can be triggered when trauma is experienced in order to protect the individual's human identity. This awakened primordial instinct then connects with the human consciousness to form Therianthropy.
In all, this is the small article I have been able to sum up based on my thoughts. Feel free to comment, share and add to this if you think there are variations or extensions to this theory. Thank you very much and have a great day!