[bnferguson]

The study you pointed to for point number two are ten years old and predate pot being legal in any states at the recreational level.

Additionally those stats are often considered to be enormously skewed as one of the primary ways you can avoid a drug charge in some places is to "voluntarily" enter rehab for it. So while it looks like pot addiction is up, it is really that pot arrests are up.

This would also explain why in the study minorities seem to have a higher rate of "addiction", as they're more than twice as likely to be arrested for minor drug charges and thus more likely to be put in this situation.