Does anyone remember the class clown that consistently disrupted the learning environment in school? In the good ol' days, the schmuck was paddled, suspended, and ultimately removed from the learning environment. These days, there is always an excuse for bad behavior, and disruptive students are allowed to run rampant in public education. We give them cute labels (ADD, ADHD, BD etc), or feel sorry for them because they come from broken homes, had a family crisis, or are afflicted with widely fluctuating hormones. There's always an excuse for dysfunction, everyone gets a trophy, and the rest of the students get shafted when it comes to learning.
Well my friends, little brats grow up, lose their gills and larval tails and hop out of the juvenile pond into the land of the real world. Some learn the hard way and get their acts together, while others keep behaving badly. They have a "what are you gonna do about it?" attitude that usually lasts until someone fires them or lays them out cold.
These punks evolve into the social parasite known as hoaxers. Because bigfoot is considered a joke to most people, this type of hoaxing is deemed acceptable, much like allowing the class clown to bully the weird kid in class because nobody likes them.