only high dose psilocybin performed better than placebo in escitalopram trials on the HAMD-17 scale, showing a small effect size (standardised mean difference 0.3), which is similar to that of current antidepressant drugs.
I mean. Ask people if they want to eat mushrooms once a month and have a pleasant experience, or take antidepressants everyday and get a whole host of life effecting side effects....
Not even getting into the price of both treatments...
It doesn't have to be more effective to be a valid treatment, there's a whole bunch of negatives that go with the other options