My understanding is that the agencies in Gaza have not only lost their ability to tally the dead, but have not been tracking deaths where a corpse has not been located.

Not to mention that this is the tail end of a long process that began with the Nakba. The fact that theres a remnant refugee population that has been removed from their land and isolated to a small stateless fragment, is already in meeting with definitions of genocide. Bombing that remnant into the dust is underlining the issue.