Hitler might have made that order, but that doesn't mean that WWII bombers were actually able to bomb with such precision that they could deliberately avoid hit

Hitler might have made that order, but that doesn't mean that WWII bombers were actually able to bomb with such precision that they could deliberately avoid hitting specific buildings. Especially since the bombings happened at night! The blitz was "strategic bombing" which basically means a large area is bombed in order to destroy and and kill as much as possible - not target specific buildings.