The Gaza Ministry of Health says as of today that 35,562 people have been killed [0]. The Israeli Ministry of Defense in March said it has killed 13,000 Hamas operatives [1].
Leaving aside the two month gap between these figures, the civilian casualty ratio is 1:1.7.
I tried to find a source for what a "typical" casualty ratio is in urban conflicts. This source [2] claims that 90% of overall casualties is a typical number. That would be a ratio of 1:9.
John Spencer, who chairs the Modern Warfare Institute at USMA, and seems to be an authority on the subject, has a tweet addressing this specifically [3], in which he cites the Battles of Mosul, and Manila as having casualty rates of 1:2.5, 1:6 respectively.
I don't think proving the negative of "lowest civilian casualty rate in modern history" is feasible, but a nearly 5x improvement in civilian casualties compared to the assumed norm, and lower civilian casualties than Spencer's comparisons seems to indicate that the claim is not without merit.
[0] https://www.aljazeera.com/news/longform/2023/10/9/israel-ham... [1] https://www.timesofisrael.com/liveblog_entry/hamas-says-gaza... [2] https://civiliansinconflict.org/our-work/conflict-trends/urb... [3] https://x.com/SpencerGuard/status/1786612914117349769
The source you provided says "for every junior Hamas operative that Lavender marked, it was permissible to kill up to 15 or 20 civilians". This is clearly an upper bound, and makes no claim about how close to this they actually come.
In the same way, I might offer my customers an SLA of two nines in their contract, but never drop below three in practice. Part of effective planning is describing the worst case scenario, but that doesn't imply it will actually happen.
For what is worth, the UN estimates are significantly lower with less than 8’000 children (and 5’000 women) out of the 25’000 identified casualties. Maybe there are indeed 10’000 additional victims as Hamas claims (the UN take that number at face value, Israel estimated are slightly lower) but it seems unlikely that 75% of them are children. It’s not physically imposible though.
And there will still be many more starving to death each day, thanks for aid trucks being attacked and burned (with IDF collusion apparently).
https://www.theguardian.com/world/article/2024/may/21/israel...