Why do Geminis have a bad reputation?

Could you elaborate on why Geminis are often perceived to have a negative reputation? Is it due to their dual nature, making them seem indecisive or unpredictable? Or is it because they are known for being social butterflies, which could potentially lead to misunderstandings or misinterpretations? Additionally, are there any misconceptions about Geminis that contribute to this reputation, and how can they overcome these stereotypes to be seen in a more positive light?