Because the goalpost is "the rockets aren't a threat".
The same Hamas rocket misfiring and striking in Gaza can kill over a hundred people (500 people when they thought it was an IDF bomb).
10,000 rockets with that potential for death and destruction have been fired into Israel by Hamas.
The reason a Hamas rocket kills more in Gaza than it does in Israel is that Israel has bomb shelters for its civilians whereas in Gaza Hamas has made it clear that the tunnels and shelters are for Hamas.
Your new goalpost seems to be "Israelis are good at seeking shelter and avoiding Hamas rockets, therefore the rockets aren't a threat."