what? either you're being sarcastic......or you dont know what it means for something to be a "double edged sword"

a double edged sword is something that harms both yourself AND your target....like lee's lotus moves.

now from your reasoning, it would be better to say "being an uchiha is a double edged sword", since this means you are from a genius clan, yet you are destined to be killed by itachi. Although its not really a double edged sword unless you are AWARE that it is, and not only do people have no choice about what clan they are born into, but i dont think any of them expected to be killed by another uchiha.