Of any of Israel's wars in recent history none has decimated their regional enemies as much as this. Every way you cut it they are in a much more secure position militarily. Iran (aka Lebanon/Syria) losing so badly is more important than Hamas surviving because that was the cludgle that threatened them from punishing Gaza too harshly (for ex: America pushed Israel very hard not to provoke Lebanon after Oct 7 and we saw how that turned out).
Any future Hamas actions will inherently be less secure as their external help is now crippled.