Sorry you had that experience. You have to remember that as Masons we get all sorts of crazy accusations about involvement with crazy conspiracy theories. For some guys it becomes tiring having to constantly defend against this, and that is probably the reason they seemed “offended”. Furthermore, although they know that these stories are false, they really don’t have the proof to be able to explain it, which only further frustrates some members.
Fortunately you’ve found this site and can now get all the answers you want. We’ll try our best not to get offended ;)