Card Rulings talk:Volcanic Scattershot

Volcanic Scattershot: If this card is sent to the Graveyard for the effect of a "Blaze Accelerator" card, its effect to inflict 500 damage to your opponent does not activate.

■The effect "inflict 500 damage to your opponent." of other "Volcanic Scattershot" cards sent to the Graveyard as a cost to activate the effect of this card will activate. Their effects will go on a new Chain after the resolution of "Blaze Accelerator" or "Tri-Blaze Accelerator".[1]

This is contracditory... So does it work or not?