This is so beyond stupid.
A) His "rocket" is steam-powered, by 70 gallons of water in a stainless steel tank?
B) He plans to reach an altitude of 1,800 feet? You couldn't detect the curvature of the earth from that altitude any more than you could see the curvature of the earth by climbing to the top of a mountain (thereby saving yourself the expense of building a homemade steam-powered suicide machine). SR-71 pilots above an altitude of 80,000 feet can begin to make out the curvature of the earth. He won't see shit from 1,800 feet.
C) He says he's going to be launched into the 'atmosflat', not the atmosphere.
I'm calling bullshit. Nobody is this obstinately, willfully retarded. This has got to just be for the publicity for his YouTube channel.