It isn't idiotic or absurd at all, it is simply practical, and it makes perfectly good narrative sense. There is, in world terms, no such thing as '1 hit point'. Just like you're trying state below, some characters can, and some cannot, withstand some sort of an attack (you can call it 'unit of kinetic energy' if you want, though I think that kind of thinking is also unsupportable, but one thing at a time). The ogre minion is weaker a non-minion ogre. As for the level 1 non-minion goblin, it would be turned to dust by the same attack. First of all its defenses are worthless, and it only has at most about 18 hit points. No level 11 attack is likely to leave it standing. Beyond that THE GOBLIN WOULD ALSO BE REPRESENTED AS A MINION. Why wouldn't it? You'd be playing nonsense with 4e's process to do otherwise. So, as long as you follow that process, you will never have to deal with anything so absurd, and it wouldn't even BE absurd anyway, in all likelihood.If we take as a given that HP objectively measure the ability of a creature to withstand a violent impact without falling, the way HP were actually used at many tables throughout every earlier edition, then it means any minion has absolutely zero tolerance for injury. It means a level 11 ogre minion has a much lower tolerance for injury than a level 1 non-minion goblin. If you objectively test their ability to survive a minor nuisance - have a level 1 fighter throw a dagger at each - then the ogre will die from the first hit, every time, while the goblin survives multiple hits.
That's setting aside the nonsense about using different stat blocks to represent the same creature, based on party level, which so many 4E-defenders endorse. At least the designers don't come right out and suggest that technique, in the book. They probably realized how idiotic it would sound.
I don't buy it. 'hit' means it had its effect. If hit means something different at different levels, then your idea of "things always mean the same in the fiction" is simply absurd. Of course the arrow just bounces off (or doesn't even hit) the higher level PC, but that is exactly what hit points is doing for you, changing the fiction.It's not complicated at all. An arrow imparting 8 units of kinetic energy impacts the breastplate of a warrior. The warrior, being an inexperienced novice with a low tolerance for pain, falls unconscious from the impact. A similar arrow, with identical kinetic energy, impacts the breastplate of a more-experienced warrior. That warrior is not significantly impeded by the impact.