Hasbarists who like to style themselves "hard-headed realists" say, vis Gaza, when people complain about child fatalities, 'that's what war is bro.'
No, it is not. It isn't remotely normal for a "military" to kill over 21,000 children and over 11,000 women. In fact, no military has killed more children or women than the Israelis have in the entire 21st century, including in wars that lasted over a decade and (other) genocides. Nor has any military razed anything like the proportion of buildings the Israelis have in Gaza.
The IDF is completely off the charts when it comes to killing women and children. Other wars - Yemen and the Congo - have seen more deaths of women and children, but through starvation and disease. The IDF has killed more women, and more children, than any military this century. (The SAA, IRGC, Hezbollah, and the Russians combined killed slightly more women/children across the entire 14-year Syrian Civil War, but none of them individually killed nearly as many as did the Israelis.)