Paul Graham can respond to your post however he wants. He _could_ simply say, "I don't care."
You _want_ an apology because you _think_ you've been wronged. A blog post entitled, "I want an apology from Paul Graham" sounds whiny--I get it. Still, from where I'm sitting the title, even with the "probably" proviso, sounds like a power-grab that denies Paul Graham's ability to give whatever response he wants to you. Also it looks linkbaity to me[1].
[1] I dislike linkbaity titles. I don't deny their effectiveness; I clicked the link!
disclaimer: I teach public speaking professionally, so these kinds of less-than-explicitly-conscious word choices stick out to me.
Edited to emphasize that I agree with the spirit of his post, and that I'm nitpicking because I enjoy picking nits.