More thoughtful Christians have known the Christian arguments long ago. Only most Muslims have never cared to check them out before, so that they might think this is new and therefore 'probably without foundation'. But it is always better to compete with real arguments instead of calling something 'deluded' and seemingly running out of arguments because otherwise you would have presented them. After all you took the time to write. No reaction doesn't mean there is no answer.
People can just be to busy.
And there are many things I just ignore, though I would like to answer it and think I have an answer. For example, though this original post was directly addressing me, I decided to not answer it, because its content wasn't important enough for me. That does not mean its argument was especially strong. But IF you take the effort and time to respond, then it is better to say something substantial instead of calling the opponent deluded without offering an alternative. That's my personal opinion on this one.