Weed dependency is understated by many, but it typically takes longer to form a strong dependency, and the withdrawal symptoms are usually much milder than the other two.
So, I agree that your logic could apply in some cases… in the more typical case (like op’s) of someone stumbling into this experiential eye-opening organically, if it happens via coke/heroin it’ll probably be a much rougher road.
Edit: Probably why psychedelics work well… the experience is very different but has very weak habit-forming pull (it’s not easy to do casually because it’s an ordeal)
Cocaine doesn't really help because it just dramatically increases the intensity and energy of your current state, it doesn't really alter your thinking in a way that could introduce positive thoughts not already present.
If psychedelics had similarly severe downsides then they would likely not be effective at aiding depression in the long run, but fortunately it has relatively few issues with careful use.
The day we can discover what someone's exact neurotransmitter balance is, I think we'll learn a huge amount about how the brain works via that mechanism. I think if we ever reach that day, we'll also learn that there is no such thing as "neurotypical"
Well do some cocaine and you'd feel great for about an hour but nobody cured their depression that way.