[Serious] Atheist Dogma

[Belacqua]

And many people who lack belief describe this as agnosticism. It's how many people use the word, whether we like it or not.

I guess you could write to David Mitchell's editors at the Guardian and tell them they don't know how language works. See how far that will get you.

Now your just being dishonest, because you just said that he wanted to use the definition of being non-committal to an opinion.

I am not being dishonest, though I may have misunderstood. 

Some people use the word "agnostic" to mean without commitment to a belief or opinion, including not having made up one's mind about religious claims. Merriam Webster seems to allow this usage.