Hamas exists because Israel chose to support them. They wouldn't be dealing with Sinwar had they not deliberately sabotaged the PLO, so of course we're in this scenario now! You can't get angry at the natural response to subverting democracy, same thing happened after the Iran 1953 coup.
The only way to legitimize terrorism worldwide is to let Israel persist unpunished. Precision-striking civilians cannot be the basis for future conflict: https://en.wikipedia.org/wiki/List_of_journalists_killed_in_...