The questions should be, do YOU acknowledge that for an Israeli citizen, whether lobbing rockets/missiles, tunnelling or walking up their street with a machine gun and grenades, in fear or outcome, it matters not a jot to them if it is a Jihadist Sunni Hamas, or Sunni ISIS terrorists doing the killing?
I would say that it does matter. Hamas is an entity they can do something about, through pressuring their government to accept a Fatah-led unity government, campaigning for the withdrawal of Israeli settlements in the West Bank, engaging in initiatives that bring Israeli and Palestinian civilians together in a positive way and voting for political parties who are more likely to resolve the situation by participating in the road map. IS isn't something they can such direct and indirect control over.
Of course, if you're going to make a point that it doesn't matter to the dead or terrorised person whether their killer or terroriser is part of one group or another then that applies equally to Palestinian civilians to whom it doesn't matter if they are killed or terrorised in a 'moral' way by the IDF or as part of crimes against humanity by the IDF, Hamas or the random Jihadists running around Gaza.