Hemomancer Devourer trait

The Hemomancer Devourer’s trait reads that it causes all of your Hemomancer’s innate traits to activate when they are Attacked as well as when they Attack.

However, I’ve noticed that whenever a Hemomancer Devourer shows up on the enemy team, and I attack a Hemomancer with one of my own monsters, it triggers all of the currently active Hemomancer abilities for me. Each of my creatures gets one of the Hemomancers’ spell gems, and a portion of each of the stats that has an active trait referring to it.

I don’t know if perhaps I am misunderstanding the tooltip, but this doesn’t seem like a good thing for the Hemomancer side.