Gugulethu is actually home to a place which pulls in tourists and other people with money, Mzoli's Meat. I've heard a couple of (linguistic) academic papers on what goes on there - apparently there's a Jewish Xhosa-speaking comedian who gigs there (the linked video is worth watching). So maybe it's not so bad after all, just something went very wrong.
We're heading back to Kenya later this month. It also has some spots I wouldn't go at night (eg much of downtown and the biggest 'township', Kibera). But people are normally more worried about other areas, rather than their own. I, living in Karen, don't like going downtown at night. Others who live nearer town don't like to come to Karen at night. Who's the stupid one?