I disagree with the idea that it was "actually correct". I suspect there is a cultural miscommunication regarding the word "Catholic" (as another commenter suggests). And because I disagree I would love to engage with their criticism, but I can't because the entire counter-argument was "no".
The original comment may be short but it's also thought-provoking. The reply, on the other hand, is not (per the FAQ) "a good critical comment [that] teaches us something".