To what end? What sorts of events are more likely to occur if the entire western world decides that these were subhuman attacks and does not taint the condemnation with warnings of retributive death tolls?
You likened this to someone questioning 9/11 in another comment, and that’s very right. After 9/11 the idea that “the Taliban” did atrocities and urging restraint was offensive led to 20 years of war and hundred of thousands of dead. When war fever is rising, the correct response is to tamp it down, not castigate people for saying “this is terrible, but we shouldn’t slaughter innocent people”.