Hyphens aren't allowed in the blog URL, but I'm OK with using one in the title (which appears on each page) if you think it's important. In my opinion it's unnecessary as many common words have a meta prefix without the hyphen, e.g. metaphysics, metaprogramming, metatheorem, etc. Whether the hyphen is required is merely a typographical convention subject to change. It seems words that begin with a vowel commonly have the hyphen, e.g. meta-economics not metaeconomics.
BTW what meta-delusion means is delusion about delusion, according to Wikipedia:
'The modern sense of "an X about X" has given rise to concepts like "meta-discussion", a discussion about discussion, "meta-joke", a joke about jokes, and "metaprogramming", writing programs that write programs.'
It sounds right to me! Shall we go with it??