The main point of all this is: no one -- not me, not you, not O'Hair --
gets to universally define the meaning if the word "atheism", to the
exclusion of all variant definitions. The Pope and Magisterium gets to
define the meaning of "Catholicism", but no equivalent authority exists
for atheism. It follows that (as suggested by another poster) you (and
others) should leave off bickering over the label, and deal with the
merits of the actual positions taken.