Wow, that is completely wild. I have done an absolute ton of cycle touring (at least 60 trips, in 5 countries), and the idea of buying a bike 2 weeks before a trip, and embarking on a solo journey like this with no experience blows my mind.
He seems to have made some really savvy decisions though, like getting a proper bike fit, and knew enough about camping and meal prep etc to make it work.
Kudos to him.