It is understandable that you may feel offended by the wording used in the question. However, it is important to remember that the question was likely not intended as an accusation, but rather an expression of surprise that something was not more widely known. It is possible that the individual was simply trying to convey that the knowledge they assumed to be common was not as widely known as they thought. It is important to remember to approach conversations with an open mind and to give people the benefit of the doubt.
