You could. It's hardly the same thing, though. Monsters that can only be damaged by specific types of weapons are rife in fantasy lore; the idea that other weapons bounce off of them even on successful hits is not particularly radical. And indeed, one could argue that a hit that deals no damage and an attack that misses due to armor are variations on the same thing.
And on a more basic level, the logical contradiction isn't there. With damage on a miss, you're either saying that you deal potentially lethal damage while possibly failing to even touch the target, or you're saying that it's impossible for you to fail to touch the target. In this new scenario, all it's saying is that you can physically contact the target without doing any real harm, which isn't a contradiction (though it is potentially unsatisfying on a gamist level).