Came here to say that exact same thing. I can see a little where he is going, but missing a TON. He knows a little about chemistry but just enough to make his a super-dangerous dumb-ass. This is where he was going with that...
I like this part too: "It's evaporated when it starts smelling like DMT and stops smelling like tetrahydrofurane"
Jeez, don't do a wash or anything. WTF? And then the fact that THF has a tendency to generate higly explosive peroxides when exposed to Oxygen. You can make the first DMT bomb!