They aren't designing with the intention of intruding on your old testament sensibilities. They are recreating scenery that abundantly exists in the real world, that's all. No agenda. Why would they go out of their way to implement your filter that would accommodate maybe you and what, maybe 5 other people?
You act as if there are people out here actively arguing for this "junk", and the devs are pleasing us at your expense. Artistic expression doesn't mean endorsement either.
Lets remind everyone though while we're here that "all this junk" you're referring to is a nude girls sign for a stripclub in one map.