Okay let me clarify myself and address this 'discriminating' issue you're raising here.
Firstly, I have nothing against Ahmadis as individuals, I don't hate them nor do I condone their discrimination. Secondly I haven't used words such as 'kafir' etc in any of my posts. In my previous post when I said '...lol, was pretty funny' I meant 'funny' in a disgusted way, as in he should not have been saying provocative things which will stir hatred.
Tolerance in the way you are prescribing it to be is fine when its confined to discussion; in a theological proble.
But when you take Quranic references which speak of the severe punishments for misleading people, spreading misinformation (when the message of God is concerned) etc into account, you get confronted with the dilemma of being 'tolerant' and letting people get misled (in which case you will be sinning) or adhering to the Quranic message and preventing people from being misled.
And your example remains irrelevant, as you are (in essence) applying a philosophical approach to a theological problem.
P.S. I personally would not go as far as calling Ahmadis 'kafir', I do however consider them to be non-Muslims due to the fact that they do not believe in the finality of the Prophet (pbuh). Christians and Jews aren't Kafir either as they believe in God, but they are non-muslims.
I hope I clarified myself a bit.