You've just described the deadliest day for Jews since the Holocaust [1] as a blip because, in your accounting, it was Israel's turn to absorb one.
The "continuum" framing doesn't hold up numerically either. In non-war years, OCHA records roughly 100–200 Palestinian deaths annually at Israeli hands [2]. Hamas killed 1,139 people before lunchtime. That's not a blip in a continuum, it's five to ten years of equivalent deaths in eight hours.
The youngest victim was 14 hours old [3]. The oldest was a 92-year-old Holocaust survivor [3]. None of those facts change based on who you think had it coming.
[1] https://www.ushmm.org/information/press/press-releases/museu...
[2] https://www.ochaopt.org/content/casualties-thousands-killed-...
[3] https://www.yahoo.com/news/youngest-october-7-victim-just-00...
What they learned was "never again to us".
Just because your family had a holocaust executed against them, doesnt give you any (legal, ethical, moral) right to run your own holocaust.
And Israel is running a holocaust in Palestine, and has been for decades.
"There's a genocide going on in Gaza? Yeah I know, you've been whining about it for years now."