What moral significance does that have? Most of the same people who do nothing but bring out the "but they didn't condemn Hamas" trope have never cared about what the IDF has done to Palestinian civilians. Does that mean the rest of us should not care about Hamas crime or ignore its victims? Of course not, right?

You can't seriously believe that responding to criticism of the undeniable indiscriminate slaughter of civilians with "but a lot of the people protesting our actions have never indicated they condemned the attack against us" appears to the rest of us as a reasonable or credible moral claim.