Parent did not imply that you have or should have marketing people. Your first sentence comes across as defensive. You should express thanks for this feedback and avoid sounding defensive, as that is alienating to people, stifles dialog, and casts you in a weak light. This is your moment in the HN sun, soak it up!
That did not come across as defensive at all to me. It was pretty clearly tongue in cheek. Your comment, in fact, comes across as judgmental and condescending
That sincerely was not my intention, and a lot of context and playfulness can get lost in comments. For what it's worth, I was simply trying to make a joke about why our marketing materials may not be as good as they should be and continue the conversation. I apologize if that came off as defensive and will make sure I double check my future comments so that they don't come off in the same light.