I presume the effect doesn't activate for the same reason Gandora's 🔥 effect doesn't activate: It doesn't count. Any effect which activates upon being sent to the GY won't work, just like any effect which is based off of the card being summoned.
Agreed, the wording is inconsistent with the effect. I'd call this a glitch.
Especially considering there's already a difference between monsters that specify a certain means of being sent to the grave and those that don't.
Atem
Guigeek
