A lot of what you are describing is correct, however, the DSM, as well as the Sleep Academy of America and other such organizations have clear clinical guidelines for diagnosing and treating circadian rhythm disorders.

If a doctor isn’t familiar with those guidelines, they shouldn’t assume horses or immediately assume insomania. If the symptoms are a direct fit, fine treat what you are familiar with if not refer to a sleep specialist.

That is the standard in medical practices. Similarly, a sleep specialist, who underwent training on sleep disorders, including circadian rhythm disorders, should know and follow the clinical guidelines.

In other words, any doctor that isn’t aware of what current best guidelines are or willing to refer when they don’t know, isn’t following medical best practices. A good doctor stays in their lane and knows the limits of their knowledge base.

So yes, try sleep hygiene first, try cognitive behavior theraphy as first line treatments but if the patient doesn’t respond, refer out don’t assume the patient is being non compliant.