I'll argue the opposite. Severe mental illness (schizophrenia, bipolar) is neurodevelopmental in origin -- trauma probably effects the progression, but on the other hand the neurodevelopmental difference attracts the trauma.
Personally I think the trauma theory is one of the most dangerous ideologies of the 21st century and to me part of resilience is effective resistance against it.
I think the issue is that rather than arm themselves with the tools to overcome, they succumb and end up posting it on TikTok or YouTube or wherever. Instead of dealing with the core issues they have.
News Flash, we all have issues, we all have past events that have shaped our thoughts and actions. Like you said, it’s the resilience we build by dealing with it, putting it behind us, and moving forward.
> Severe mental illness (schizophrenia, bipolar) is neurodevelopmental in origin
This is a theory, not fact. There are proponents from the medical community that argue otherwise.
Professor Jim van Os at Maastricht University Medical Centre: 'Schizophrenia' does not exist https://www.sciencedaily.com/releases/2016/02/160203090208.h...
Robin M. Murray, Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience: "In the last 2 decades, it has become obvious that child abuse, urbanization, migration, and adverse life events contribute to the etiology of schizophrenia and other psychoses. […] I expect to see the end of the concept of schizophrenia soon." https://pmc.ncbi.nlm.nih.gov/articles/PMC5605250/
The Role of Childhood Trauma in Psychosis and Schizophrenia: A Systematic Review: "There is a correlation between histories of child maltreatment with several structural changes in the brain." https://pmc.ncbi.nlm.nih.gov/articles/PMC8858420/