OP is equating zoning out with doing psychedelics. I completely disagree with that. Psychedelics don't numb and distract liked drinking alcohol. They do pretty much the exact opposite.
> I am of the opinion that resolving trauma that causes a person to "zone out" and sleep walk through life can have equivalent effect to psychedelics.
The phrase "that causes a person to 'zone out' and sleep walk through life" is meant to describe "trauma", not "resolving trauma".
You should read it as "resolving (trauma that causes a person to 'zone out')", not "(resolving trauma) that causes a person to 'zone out'".
This is only very generally if at all true. Psychedelics can numb and distract. Psychedelics can dissociate people further from their feelings. Psychedelics can also make people more aware of their feelings. Psychedelics can make people in touch with their feelings. But it really varies on a case by case basis. It depends on the person, the drug, the particular situation, and so on. A drug that gives one person a dissociative bad trip can give another person a minor escapist experience and can give yet another person a powerful, beneficial, emotionally moving experience.
They are saying that taking psychedelics can provide a similar breakthrough like awakening after resolving trauma.
A dozen hyphens might help: “...resolving trauma-that-causes-a-person-to-zone-out-and-sleep-walk-through-life can have equivalent effects to psychedelics.”