Sort of, a good distinction would be between the bombing that was primarily aimed at killing random Germans and that aimed at harming the war effort but which also wound up killing a lot of random Germans. The former was worse than useless - didn't hurt the German war effort but it did waste resources that could have been used for the latter. Bombing key economic infrastructure, particularly energy and transport, but also heavy industry, was useful.  Given the state of bombing technology at the time, that meant anybody anywhere near such infrastructure. A rational bombing campaign would have avoided much of the area bombing, on the other hand folks in the Ruhr would have been even more fucked than they actually were.