Sometimes labels matter
A “birther” is defined as someone who believes Barack Obama is not eligible to be President of the United States by reason of the facts of his birth. It’s a not straw man label. Such people really exist; there are polls counting them. The only negative connotation of “birther” is that created by the nonsensical nature of the belief itself and the misbehavior of some who hold it.
“Obot” derives from “Obama robot,” someone who follows Barack Obama’s bidding to disrupt the birthers. In fact, those who oppose birthers get no direction from Barack Obama either directly or indirectly, and many of those those who oppose birthers aren’t Obama supporters at all. The “Obot” is a straw man label. There are no Obots.
While I was willing to accept the Obot tag at one time, I think that was a mistake. From now on, my phrase is “anti-birther” or “birther debunker.”