It's the God/no god argument because it's become you telling God doesn't exist because that's not logical.
I'm not modifying the quote by including "the period," I'm just using correct punctuation.
I wasn't quoting the phrase "the period" from anywhere, so I can it possibly be modifying it. To say I am is false. Tell me your logic there.
Again, God is beyond logic. This is punctuation, not something supernatural.
Your argument falls apart when you use quotation marks for dialogue, or for quoting from another written piece. Everything within the quotation marks is part of the quote (just like how everything within parentheses is part of that parenthetical phrase). Also, I think you should have used a semi-colon there anyway.
Did you read the section I linked?
Here it is again. It's written by somebody who is on
your side, acknowledging that it's an illogical convention. It addresses all of this.