It is undeniable that pyro does not belong in smash fortress, not only do his core mechanics directly contradict the entire point of smash fortress, that being high damage, single shot attacks, but the play style he encourages makes him incredibly boring and frustrating to fight. The pyro's flamethrower combines with the knock back mechanic the game mode is based around resulting in the player getting stun locked until the pyro literally pushes him off of the map. It is not like it is a skillful mechanic either, the flamethrower requires very little aiming, and once the pyro hit an enemy once, he can focus them down without having to aim since they are forced in the direction the pyro is facing. Even if the player attempts to strafe, the rapid nature of the pyro's damage interrupts and prevents this. There is absolutely no reason pyro should be playable during smash fortress as he only serves to make the game mode worse.