Your muddying up the points, none of those issues are related to drug use. California has a lot of homeless people, a lot of those use drugs. Californias homeless problem is complicated and completely separate from drug use. Now your quoting articles about california as a whole.

What your saying and the conclusions your drawing make no sense. Your also showing a misunderstanding of the nuances of san fransisco. Your own articles show that these problems are concentrated in historically problematic neighborhoods. Go back to the original quote i picked from you, it shows a complete lack of understanding of what is going on, and you cant form a coherent argument.

Show me one article that says, sunset, richmond, bernal heights, glen park, excelsior, pacific heights, presidio, noe valley, balboa park are full of needles.