[privong]

> In that case, it's plausible that it doesn't take on additional mass and thus never reaches a maximum stress point, thus doesn't explode.

In the current understanding of jets from black holes, the jets originate from outside the black hole. So the jets are not reducing the mass of the black hole. The amount of material launched in a jet is smaller than the amount of material which falls into the black hole. So black holes with jets would gain mass, rather than losing mass or staying the same mass.