Oakland downtown/uptown has property crime and some violent crime but it's not particularly bad compared to other areas. Most crime in both SF and Oakland (as it is anywhere) is poor people hurting other poor people.
This isn't a homeless man crapping problem, it's an insufficient bathroom infrastructure problem, and yes most mid to large size American cities have it. Which is exacerbated by laxative type drugs. 'Hello Alcohol, Hello Heroin, I'm talking to you two.'
If you want to see someone defecate in public, SF would be by far the #1 place to visit. You're unlikely to see that behavior tolerated in NY, Chicago, KC, Vancouver, Seattle, Portland, Sacramento, Phoenix, Denver, or any other city you'd care to mention.
I was once pressed to buy crack in the Crossroads District of KCMO, but that's pretty much it. I used to walk from Crossroads to Crown Center for lunch and back again every day. Second most eventful walk: a couple of birds swooped down and tried to take some of my hair.
In a 2 year period I saw/experienced:
- defecation, urination, and masturbation in broad daylight on the sidewalk
- heroin injection
- a half full 26er of vodka fly out of a window and hit me at my feet
- packs of men with assless chaps and various states of undress and arousal in line at a Subway (it was the Folsom street fair week) , one holding his slave by the collar while ordering a BLT
- half naked people stumbling out of minivans with crackpipes
- two incidents of modest riots / bonfires in the middle of Market street (the Giants won)
- various gunshot murders (one being a sawed off shotgun assassination attempt at the Gas station off Harrison and ...5th?) that I thankfully missed but glimpsed the aftermath of
It's like parallel universe Disneyland. None of this really affected me - more bemusing than anything, but it can be shocking to those unaware.
I read that comment as more narrowly disputing "most mid to large size American cities have it". Revisiting, I do think my initial reading was correct. If cookiecaper was denying the problem existed, why would imagining it be "a nice way to comfort yourself about living [...] in either SF or Oakland"? The comment makes substantially more sense as asserting that 1) the problems in SF are not problems elsewhere, and 2) a view that they are problems everywhere (and thus maybe not solvable) is not reality based, so SF and Oakland must be "Doing It Wrong". I don't agree with that comment - as you can see from my direct response to it - but the logic of it is coherent in a way it would not be if it were supporting the other point.