You're correct, there wasn't. In fact the position of Laundry Superintendent did not exist, aboard Titanic. So I think that error somehow crept in, or the writer simply didn't do their research.AFAIK, there was no laundry superintendent named John Burns on the Titanic.
That is a very poor article, full of errors and melodramatic embellishments. But in 1937, when the article was published, the Titanic tragedy was not as famous as it is now.This is the article about John Burns but there isn't any evidence he was on the Titanic... perhaps sadly he just abandoned his family?