Black holes near the galactic center will orient with one pole toward the Milky Way central supermassive black hole. Gamma ray ejections from so oriented black holes will point outward from the galactic center, along the center plane of galactic rotation, putting our star in the sights of a gamma ray burst. This action of the so aligned black holes may as well plow out all manner of material, which may be the origin of increased solar activity/flares, a source of mass extinction not discussed in the article.
I need to think about that. The sun and planets pretty much have poles aligned. The planets do not point a magnetic pole at the sun, but in the same direction as the sun. Magnetic fields like to align, not go perpendicular to large fields. Also, I thought that not even light can escape black holes so why gamma rays? I need to look more into that theory.