Sure, they cheated with the DMT, but the principle is relatively sound (and their eyes are open); despite their conclusions, being based on such a small window of direct experience.
The laser light is equivalent to the light balancing effects that are observed while in darkroom, and in this context, is used as the element to awaken the dreaming attention to assemble a different “world.”
Like we are assembling this one, right now. As long as the internal dialogue is dialed back enough to allow that.
Just wish they were more aware that they don’t need the artificial DMT. Just silence and darkness, which is a direct way to increase our own endogenous DMT, a molecule that is already present in the human brain and modulates our neurotransmitter systems (despite not, technically, being a neurotransmitter itself).