That is not evidence.
How would you know what doctors should do? You act like you have a clue what you’re talking about.
Genetic testing is mostly useless, can’t determine the effectiveness of a medication, and shouldn’t be used to guide treatment.
Most people will get a series of routine labs as part of their initial work up. It’s not appropriate to order batteries of tests going down rabbit holes searching for rare or controversial illnesses in the absence of clinical findings.
Not sure what less risky medications exist for depression. SSRIs are some of the safest medications in mental health.