Is it ad hominem to point out facts about someone's history? I'm not being facetious, I'm honestly asking! This piece is only short and not super bias so peopl

Is it ad hominem to point out facts about someone's history? I'm not being facetious, I'm honestly asking! This piece is only short and not super bias so people should read it and decide. I think longer more bias pieces do deserve a disclaimer/warning lable. Is that fair?