OP is right to a certain degree. Things improve at higher tiers, but around till tier 5 there are some people who just spread it having without no idea of aiming proper. Many times I've seen Destroyers launching at enemy ships from behind !
Why I feel there should not be any excuse is, when I started playing DD's, I immediately watched few youtube videos. The idea of launching behind the predictable path came to naturally. These are not Alchemy. But somehow there is a portion who does not get it.