I don't think anyone here is saying that using psychedelics is going to 'expose hidden secrets'. It's more that they can help you become aware of the holes in your usual way of thinking.
One pattern I've noticed while reading reports of bad trips is people being so miserable during the experience that it forces them to acknowledge that existing in this universe can be really really shitty at times, which shattered their notion that everything's going to be okay due to their limited experience as a relatively well-off white person in 21st century USA. The reports are often written as if whatever drug they took is to blame for their new existential crisis, but I see it more as the fault of the bubble they were in. If they come out of the experience having more compassion for others who are less privileged then I'd say it's an improvement.
One pattern I've noticed while reading reports of bad trips is people being so miserable during the experience that it forces them to acknowledge that existing in this universe can be really really shitty at times, which shattered their notion that everything's going to be okay due to their limited experience as a relatively well-off white person in 21st century USA. The reports are often written as if whatever drug they took is to blame for their new existential crisis, but I see it more as the fault of the bubble they were in. If they come out of the experience having more compassion for others who are less privileged then I'd say it's an improvement.