you are right, the japanese are a diffrent culture. but i give them the right to cricitize my culture and what i laugh and like and hate and i have the right to do so to them. in my personal opinion they strike me as childish and unfunny. i can ofcourse point things like that in america or other countries like jersey shore or the big brother. or simply our rap and hip hop culture where women are sluts and men have yellow teeth and 10 tons of gold on them. it doesn't mean all americans are like that and what you posted here doesn't mean all japanese are like that. but i still think those shows are childish and i don't like them.
you probably never heard of them but here are scrolls from the Edo area of japan detailing "Fart Competition", i don't know what the japanese think, but i think that farts are not funny and childish:
You must be registered for see links