Or perhaps they mean the same thing as was meant by the slogan when it was first coined, around the time of the American Revolution, and the same thing as was meant by the women's suffragists who used it in the late 19th century.

Maybe in some sense "no taxation without suffrage" would be more accurate, but it would be a worse slogan. In any case, "no taxation without representation" is a well known phrase, it's been around for over 250 years, and I don't think much is achieved by nitpicking its wording.

This is probably the most embarrassing comment I've ever seen on HN.

Perhaps they live in DC?