I don't know whether the xenophobic staring practice is still going on. My guess is that it is still going on though, because it seemed like an ingrained cultural practice that they were dedicated to.Wow that sucks. Turks were never so mean when I stayed in Izmir and visited istanbul. They were curious about the yabanci and wanted to chat in English.
Apparently many common Turkish people are super gracious to random Western tourists, and it shows up in home videos people make of visiting Edessa/Sanliurfa. It could partly have to do with Eastern and Asian hospitality culture, particularly to Westerners. East Slavs and Chinese are traditionally like that too.
The other side of that with the Turkish culture though is that if it came to living WITHIN their culture, they might be less welcoming if you are practicing Christian, Greek, or Armenian due to their historic "Turkification" policy. Probably the complexities of Turkish culture deserves a separate thread.