Despite this, it ruled that the 16th Amendment was validly ratified, which of course is nonsense.
In a 1997 Supreme Court case, I believe called "Clinton v. City of New York", the SC ruled that if only a single paragraph was missing between the passage of a 1000-page law, between the House and Senate, that would make the law invalid.
A single character, in the 16th Amendment, is far more of a difference than the proportion of a paragraph in a 1000-page bill.