I see your tactic now, pretty ingenious. Destroy the argument by dividing the sides up into so many mutually exclusive subtypes that you can no longer meaningfully argue.
It would be a tactic if I had a goal. It simply annoys me. Like I said before, it begins to dumb things down and invokes some unconscious psychological pre-dispositions to bad habits.
I'm no psychologist, but I believe the same bits of psychology responsible for a person being prone to forming a group with similar opinions also makes them thick headed at the same time. It's essential for group cohesion. Evolutionarily, it makes sense, as those prone to this would be better at cooperating, form tightly-knit groups/tribes, and survive. They'll also cling to the bitter end, again for unity and cohesion of their social circle.
I still, to this day, have yet to convince an atheist that he and fellow atheists may be prone to the same behavioral tendencies that they believe is exclusive to religious groups.
Especially the anti-theists/anti-religious circles, un-ironically.
no longer meaningfully argue.
Actually, you can't meaningfully argue using broad, poorly defined blanket terms. That's kind of the whole point of my theological stance of Ignosticism.
oh wait, also:
[Atheism] simply a rejection of one particular belief
I already want to argue with you that definition. I've never personally got away with saying "atheism is X" without getting into an argument with an "atheist". When I say "[religious thing] is [negative commentary]" however... BAM! Instant flash mob of support from "atheists". However I won't argue with you because it never goes anywhere, because everyone seems to have a slightly different personal definition of it. Hence there wouldn't be much of an argument.