Whether Jeanne explains an intention or not, my point is that the statement was meaningless. For example, if I say "Mary was the mother of Jesus" - that's a true statement. Then let's say Guy responds, "That reminds me of what Catholics teach." Yeah... and? There's no point to the statement. It doesn't add anything, but it does have a hanging implication that the average reader might pick up, which would be, "Hmm... if Catholics teach that, maybe I shouldn't say it," which is the wrong way to approach a subject.
For example, I believe the King James Bible is the preserved Word of God in English. Mormons teach the same thing. So what? I don't make my decisions on these things based on what other people may or may not believe. Ergo... I don't really concern myself with what some denomination teaches, especially when they name themselves after a man:
For while one saith, I am of Paul; and another, I am of Apollos; are ye not carnal? Who then is Paul, and who is Apollos, but ministers by whom ye believed, even as the Lord gave to every man?
As far as I understand it, those people are saying "I am of Calvin," and that's contradictory to New Testament doctrine. Lutherians, Calvinists... those are brands or titles that should not be, if one follows the Word of God.