This guy was a former muslim, now he is an atheist.
First, he is turkish and Turkey is a secular country. That is very much different.
He will not likely see the day light again if he were in Afghanistan, Pakistan, Saudi, Yemen, Sudan... and etc.
A apostate muslim will have much less trouble if he is in western countries or secular countries, though he may still have danger. Reports of honor killing of those apostates indeed happened in U.S., Canada, Australia and etc. as well.
The problem we focus on now is what happens in muslim countries that lack tolerate or have no tolerance at all.