There's a difference between "can't" and "don't like to", they aren't going to suffer from any severe withdrawal effects from not having it other than simply not liking being sober. Caffeine withdrawal is far worse for example. Of course if they're using it for something like pain relief, or some other medical reason like you said, that doesn't really count as addiction.

I mean, find a substance that people CAN'T be addicted to. However, the physiological addiction is very low. There is no direct dopamine feedback loop, to my understanding.

I'm addicted to seltzer waters.

It's not completely free from addiction potential, it's similar in degree to caffeine[1]. Dabs are very concentrated, and if you hit them several times a day many days in a row, and you are naturally inclined toward addiction, you may find yourself addicted.

AFAIK the withdrawal symptoms aren't unbearable, nothing like stimulants or opiates or benzos. I'm sure that getting high sounds a lot more attractive than sitting through the withdrawal for 36 hours or however long it lasts, and that the withdrawal would impair the user infinitely more than the cannabis.

[1] https://en.m.wikipedia.org/wiki/Psilocybin#/media/File:Drug_...

Well, independent of whether marijuana is minimally addictive or not, it can certainly be habit-forming (which can be just as significant as a "real" addiction).