Personally I don't find it important to define if weed (or any molecule) causes DPDR or reveals some underlying issue. For me it's as if someone tells me "don't walk in that field, it has X% chance of being a mine field, it's dangerous and I wouldn't take the chance if I were you", and then someone else tells me "the field itself is not dangerous, only the mines are, and maybe there are no mines". That second reasoning doesn't help me make a decision if I can't know if mines are there or not. The analogy with weed is that, if weed only causes problems for some kinds of people and not others, it doesn't help me to know that if I can't know which kind I am.
But if anybody is here and has DPDR, I would think it is safer to assume they have underlying issues.
If you think you can be immune to problems caused by weed, why do you think you aren't you immune to the DPDR you have right now?
Honestly, I don't know if weed would cause problems for anyone, or for me or for anyone here. If from your experience you can smoke and be fine, it's good for you. I just know that there are people who had recovered and tried to smoke and relapsed for more than a year. So perhaps it can help, and I wish it can help anyone who tries, but I wouldn't try it myself.
The thing about thinking is very interesting, there are many things I want to say about this, but I will make another post so as not to sidetrack this one too much.