I don't get it.

I think Kaimi is trying for some sort of silly sarcasm or bizarre belligerence or perhaps a partial peri-parody of Card's own mysterious megalomania.  But frankly, the real courage comes with disagreeing with Kaimi.  When it came out Kaimi doesn't really believe in the church - who got kicked off the Tired & Shopworn blog? 

Kaimi is one of the untouchables of the 'Nacle - the tight inner circle, living in a protected cocoon, believing themselves attacked by the terrible forces of orthodoxy, when in fact, they belong to a society where they just pat each other on the back about how awesome they are.  It's like his attack on Card is political and psychological projection or something.

I know who I would convert!

I would choose Steve Evans.  It might actually be interesting to see what it was like if he was actually converted to the actual Gospel, rather than to the "cult of personality only tangentially related to the Gospel" that he currently practices.