The 600,000+ men who died in the Civil War may have believed they were fighting to preserve the Union or to defend their homes, or to defend Southern rights, or to free the slaves. None of them believed they were fighting for woman suffrage.
Some of the strongest opponents of woman suffrage in that era were women.
So what? Does that make him infallible? There happen to be a number of loony lefties who are regulars on Fox News. I happen to watch FoxNews with some regularity in the evenings.