> If you consume, only in particular establishments or at home,
I think you're imagining a hypothetical scenario that doesn't match the problems described in the article.
Portland isn't having problems with crime and homelessness because responsible adults are consuming moderate amounts of drugs from the comfort of their homes on the weekends.
> If someone breaks those regulations, then they face similar kinds of penalties as people who produce and consume alcohol would.
I think you've missed the point of the article and what's being discussed. Decriminalizing drug use means removing those penalties, which has resulted in widespread public drug use in those cities.