Hi Brink. No you are definitely not the only one to get very desolate, mundane, dank/dark experiences that seemed to never end during an iboga journey.
Mine came on 3.5g of very powerful TA. There was also a bunch of repetitive cartoon like and just repetitive non sensical visuals mixed in as well.
Interesting reading your interpretations of yours. In hindsight I got similar messages after integrating, got that I was still stuck in some old patterns that I refused to let go off.
My first flood was my break thru experience, which was beautiful. This flood was more geared towards exploring, like wanting to see certain things, which I saw, but also asking iboga to help with things that in hindsight were not positive. So for me, iboga made it quite evident that I don't need to be using it this way. I did a get a lot of positive results (of course!) out of it though, I had the shine, and had some purges which cleansed me. Writing this, just remembered that during that journey through mundanity and desolation, I saw some (astral?) entity show up just floating around my head staring at me like a gormless blobfish:
http://static.businessinsider.com/image/5228e31feab8ea240f8b457e/image.jpgbut with an unsymmetrical face.
It just looked so bored and mundane, lol.
Yes, iboga definitely change my outlook on life, including socially (referring to my first flood in particular.) Yet, I needed (and still need) to make the effort to come from Love (positive)and not fear (negative), and get out of my comfort zone, and do things that keep in tune with my True Self..heck, just doing the basic stuff like being more responsible and having accountability as well. Iboga gave me a whole new reference point and lessons to come from (like living in the moment as Rhythmn Spring mentions), it allowed me to get out of my ego/monkey mind for a bit and see a bigger picture.
Practically, some of those thought patterns and fears can come back that can effect relationships and connecting with people, but thats where the work comes in and it isn't always easy. Myself, as an ex-addict, pain (and potential 'pain' or risk) was something I ran from, afraid to Live. Again, looking back, after much work done post my first flood... iboga planted the seeds and gave me all I needed to get well. As Alexandra Lost said, it is a teacher, it is not there to do the work for us.