[Opinions] precious ain't the problem
The problem is that Draco is so obviously a Harry Potter name. I mean, who had ever heard it before Malfoy came around? And the character isn't even a nice one. Some girls think he is sexy and all that from the actor who plays him, but anybody who read the books or looked beyond the actor's good looks knows Draco Malfoy is a horrible and obnoxious character.
So if somebody meets a boy named Drco, they'll know automatically the parent was a big Harry Potter fan and that he/she didn't pay as much attention to the character as to the actor.
Also, the term draconian, meaning very harsh or unforgiving, comes from an ancient judge named Draco, who was known for his brutality.