I'm understanding the term "hostile reading" as Card defines it in the above quotation. A hostile reader is one who approaches a book skeptically or is forced to read it (in the sense of being required to read it to complete a class). A hostile reading is what he does.
Wait... So if someone reads it voluntarily but skeptically it is somehow a hostile reading by the definition you cite? It seems to me you are selectively ignoring the part where he explicitly declares voluntary reading not hostile.
No, Card does not explicitly declare that in the quotation I posted. (Did you mean elsewhere in his review?) He's saying: It's a hostile reading if it's skeptical rather than "with belief". It's also a hostile reading if it's forced rather than voluntary.
You probe his definition by asking, If someone reads it skeptically but voluntarily, does that count as hostile? That's a good question. I don't think we have enough information to answer it, because Card does not state how to weigh skepticism and forcedness against each other.
