I am not commenting on your defense of your reputation and your company. I have no problem there. I might react as you did if I felt my reputation (such as it is) was impugned.

However, what is a bit childish is quitting the club because of one member who is speaking for himself, not the club.

Does a member of a national numismatic society (if there is one) quit when he has an argument with a fellow coin collector?

Defend yourself but why quit the club??