Because they're dumb. TN is also dumb for allowing people to pick that stage outside of training.
Free Step Dodge
Forlorn Penguin
His Reverence
Lolz dojo is Ayane's friend.
SweetRevenge117
Dojo isnt aloud in tournaments. Lol. People hate wall combos which is stupid. Positioning is a very crucial part of doa and dojo negates that. I always dashboard dojo pickers. Or I dont try
panicitstylor
I KNOWW!! I just played in a lobby and seriously EVERYONE was picking the Dojo! I left, I couldn't handle all of that! xD
Brute
dojo's for pussies
His Reverence
I don't understand the complaints lol. Ahhhhhh, all the room in the world to space. 
Force_of_Nature
Lol, I just recently saved a replay that showed how Ayane gives no fucks if you choose the Dojo stage against her. But yeah, I have no respect for people that select the Dojo stage.