This would have been interesting if he have LIVED in all 193 countries. Travelling through the countries, like he did, does not seem to add much value to one's life other than some self-centric ego boost. I am not trying to dilute the effort and the resourced he put into this achievement, it is a significant effort, and expensive as well. However, I read the post and thought, meh.

I have lived in about 6 countries in my 40yrs and still felt that I have missed something worthwhile in those countries. The culture, landscape, food etc in the various countries are what I travel for. Not for a stamp in my passport.