In my view a genetic pre-disposition is necessary but not sufficient and that even a mild trigger is required, but it’s life and no-one is so sheltered that they’re able to avoid all possible triggers.
I was thinking more along the lines of drug abuse or addiction, PTSD, invasive surgery or pregnancy with regards to solely developmental anxiety disorders. There is likely always a genetic element though but some of them are better viewed through a developmental lens.
We disagree on that, I think the focus on developmental is on the assumption that it's easier to do something about the environment than to reliably treat medically, this is only true because doctors etc. know so little about how to treat it medically. Which in my view is not a good enough reason. I hold the opinion that there are effective ways to treat anxiety medically (Low Dose Naltrexone as an example that works for some) and if those were better known then medical interventions would be more effective.
In general when people speak in depth about something like this you can assume they or someone they love suffered from the relevant issues being discussed.
In my case I’m lifelong bipolar disorder and generalized anxiety disorder.
I’m definitely not a doctor. You shouldn’t trust medical/psychiatric information given in any internet comment though.
And to paraphrase the other commenter, “didn’t realize I needed to get your permission to write about something without the proper qualifications”.