Certainly not! Remember, I'm talking about the very first time I started playing Magic (right around Magic 2010), as I'm first learning the rules and understanding how the game works.
At the time, I didn't realize that "megrim" was
actually a word. I thought it was a name made up for the card. This card's "name" sounds like a proper noun, has a picture of a creature on it snarling at the player, and it actively jumps out and harms the player when something happens. In terms of flavor, it feels like a creature that sits there and hits the player in certain situations. On top of that, my friends who taught me the game always called it a "he;" they said "Whenever you discard a card,
he hits you for two."
So when I was learning the game, I dissociated creatures from creature spells, because Megrim was a creature to me (it just couldn't attack or block - it was an enchantment because it had to be mechanically). Because Megrim was taught to me as a creature that can't attack or block, my perspective on flavor was permanently skewed.
When I say "poorly designed," I'm almost exclusively talking about the modern art. I just went back and looked; the
Seventh/Eighth Edition art doesn't have this issue. It doesn't look like a creature; it looks like someone in pain. It "feels" like an enchantment. Assuming you don't know that "Megrim" means "migraine headache," the modern card "feels" like a creature that's sitting there in the corner waiting to swipe at you.
At least, that was my experience with it.