Rorquals didn’t really need to be nerfed, they needed to be limited in numbers on field. All the nerfs to the ship after it was empowered to ridiculous, unhealthy levels and in ways that neither the ship nor the game was designed for (and never was adjusted for either after the changes) only created frustration instead of enjoyable gameplay.
Had CCP taken the opportunity to limit Rorquals to 1 active indu core per resource field and tied all bonuses of the ship to the active indu core, they would have reduced their numbers, could have kept the better than exhumer yield, forced tactical choices, forced group play and would not have generated frustrating experiences.
But as long as people like Hillmar, Rattati or Psych are responsible for handling EVE, creating more frustration over enjoyment is all that matters. After all, we are supposed to take medication to cope with EVE.