I care more about equality than international law. If Israel uses a tactic or policy, then its valid and just for those fighting Israel to not tie their hands behind their backs and avoid the same tactic.
>Khalil al-Hayya, a reported target of this air strike, was previously targeted by a 2007 assassination attempt, which killed at least seven of his family members.[33][34][35] His home in Gaza was struck by an airstrike in the 2014 Gaza War.
Israel hardly has difficulties with killing innocent family members. So "civilian strife" is irrelevant in my view, as symmetrically Palestine, Lebanon, Iran, etc are permitted to do the same against Israel. The people targeted in the Qatar strike were all political office holders not soldiers. So for instance it is valid for these countries to bomb the home or place of stay of Ben Gvir or Benjamin Netenyahu and kill them and their family members for the sake of just and fair combat.