My feelings on this are very mixed.
On one hand I am awe struck by the amazing amount of work that went into that costume. It's the type of thing I would have expected by the likes of legendary artists Jim Henson or Stan Winston. Watching his movements I can't help but wonder how he is positioned in there, where exactly are his knees?
At the same time I'm horrified that people are enabling such behavior to this extent. It seems like this guy is going to extreme, obsessive levels that could indicate some deeper psychological trauma being placated rather than resolved. Especially as this is something he doesn't share with family and friends, which reminds me more of destructive coping mechanisms (drugs, alcohol, self harm) that a person is too embarrassed to share than someone getting a little too involved in a hobby.
$16K can buy a lot of quality time with a mental health expert.