I think the problem is the very idea of MH treatment. If you have some verifiable or identifiable medical condition, then you can try different interventions to address it. If you are suffering from a psychological-spiritual affliction with no apparent physiological basis, it doesn't make any sense to talk about "treatment".

Mainstream healthcare has perverted everything. Problems stemming from life difficulties are lumped in with other "diseases" and the afflicted are herded into medical-like treatment models -- drugs and therapy -- that by definition .

Meanwhile, all sorts of low hanging fruit and foundational stuff that IS physiological is overlooked or deliberately ignored -- basic nutrition, environment, sleep, toxicity, gut pathology, etc.

Man-made electromagnetic fields, mercury, fluoride, nutrient imbalances, sleep disorders, infectious disease, parasites, messed up gut biome... these and other factors are know to cause "mental illness". Putting these people on drugs or in therapy might well be a path to more suffering.

But there is no money to be made by telling people to... eat better, sleep better, get rid of Wifi, keep mobile phone in airplane mode when not using, detox, etc. And once someone is on the drugs or therapy train, it's hard to get off, and that is hugely profitable. After a while, another drug is added, then another. And if therapy is causing problems, maybe a second therapist is added, and it goes on for years.