You're being literally bound to an argument that goes beyond literal meaning, add belief and faith to any argument and the rules change.
I'm simply arguing against the claim, that "Every terrorist is an atheist in theory", and I say the premise is false, based on definition of 'atheist'.
The first question is the discussion "Every terrorist is an atheist in theory". The answer is, no they are not.
Nope, people believe in a whole variety of gods, the one you believe in is one of many 1,000's. Not believing in your version, doesn't make someone an atheist.
Is it mine or your (general your not you personally) version though? Belief in God is binary you believe/obey or disbelieve/disobey
Based on a definition then maybe, but faith and belief have to go beyond a definition by language as you are putting your faith in something that no one person can either prove or disprove.
That's a different question. Atheism is simply a lack of belief in the existence of god or gods. Someone may self define as whatever religion they choose, it doesn't mean they follow the tenets of that faith. Not all Anglican priests believe in god for example.
Which is simply your choice, people will argue your logic but it will not matter as faith in God is personal and without proof or reason, it is simply your belief.
Your definition may mean you win a literal argument and that you can cling onto a fact. It doesn't answer the questions that you want though.
I don't think it is personal tbh I use the example of that woman from that TV show, Muslims like us or whatever it was called, saying she was Muslim but didn't pray instead wrote letters, didn't cover and felt didn't need to and wenr clubbing etc as she felt she could. Sure she can do all of that if she chooses but Muslim she isn't. She has denied God
If he believes in the possibility, then he could still be an atheist. If he believes in a god that is an alien, then he is not an atheist. BTW. If, as I suspect, you're trying to claim Dawkin's is an atheist, I couldn't give a ****, I know very little about him and don't follow his writing.