In the age where everything on primetime TV streams, it's getting much easier to realize that there are just going to be viewers that will only be happy when you have a primetime lineup clearing The Lutheran Hour seven nights a week. Nowadays you look silly if you pre-empt a show because the title or concept is offensive in your view, because the viewers are just going to get it anyways and ignore your alternate Andy Griffith or Best of Investigation 7 Reports programming and drag down your ratings. If you pre-empt these days, you're telling your audience 'We're treating you like a child and you don't get to watch this...hey! Why are you watching that show on the computer or other station?!'
In 2001 when stations were pre-empting Once & Again because of the Jessie/Katie storyline, even then it seemed petty and like a station was being pressured by a few people and not only ticking off more people that care about the show, but basically killing the show. Only for the stupidest programming concepts (like Married by America and Osbournes Reloaded, which were deservedly pre-empted by Fox stations because they were just terrible shows in the first place), or programming repeats where local content can be fit in without any consternation do I see pre-emption as a good thing.
As for the content of Apt. 23, it's well near 10pm. I've watched it and I've seen much worse on FX and Comedy Central. It's about the same on sexual humor as Happy Endings is. And look at S(tuff) My Dad Says; everyone tuned out because the show was terrible, not solely because of the title.