It's underdeveloped because a terrorist organization fought a war to control the telecommunications system so they could leverage it more effectively for more terrorism.

To receive messages through an underdeveloped telecommunications infrastructure.

obviously. It seems more akin to hamas than like, the green party in the US for example though. I wouldn't be surprised if the primary purpose of the pagers was for military communications. I would expect any sort of political meetings to be done through a scheduled period, i could see notifications going out for these things. But that's about it.

also, from what i've heard, they had phones previously, and recently got rid of them for the usage of these pagers, since the phones were probably bugged, with israeli intelligence anyway.

Well, if you feel that way, I guess the mass murder was fine.

also i'm not sure this semantically counts as a "mass murder" usually those are done directly by an individual, on a group of people immediately in front of them. Maybe it could apply to this, but that seems like a stretch, especially considering this killed like 50 people total, which is a lot, but considering the amount of injuries and spicy pagers, that's not very effective.

Would the US pullout of afghan that killed like 13 members of the military also count as mass murder? That's more than a few, and probably more collective than this event.