After reading for a bit, it became apparent that the title is misleading. This guy from England has indeed made it half way across Europe, but he has hardly traveled the world.
Not only does he have yet to complete his circumnavigation of the globe, his experiment was stonewalled in Athens for the gross majority of the time he spent abroad, and he then bailed back to the UK.
Also there's no indication anyone is paying for his flights, buses, ferries, etc.
It says in the article he crowd funded his flight to the uk
If you read through all of the posts you will learn otherwise.