Hey friend. Regarding your last question: I think something classifies as addiction if you wish you could stop but you are compelled to continue AND it's having a negative impact on your life.
It's OK if we don't have immediate answers.
My current SO told me that if it was an eating disorder it would be called binge eating and that put it into some perspective for me. We need food to survive but it's possible to have an unhealthy relationship with it. We seem to be in a similar situation.
This is something I've thought about. I don't trust other people's products so I'd prefer to make my own. My lymph nodes in my chest get really enflamed when I vape too much rosin no matter how careful I am not to have the temp too high. I've been planning to try decarbed rosin in capsules if I want to use again, but I can't think too much about that now while on my clean streak. I just need to keep going until I feel the stale greyscale depression feelings come back. Thanks for the suggestion!