Eh? I though Seyfert galaxies were where the central core was undergoing a chain reaction of supernovas. The first one slightly warms the surrounding stars, shortening their lives and pushing a few of them over the edge, they in turn warm their neighbors, pushing some into nova, etc.
No need to evoke a black hole as a root cause.
You’re askin’ the wrong guy, I thought Seyferts were potato chips.