Jim likes playing with prophecy, you think it means one thing, and actually it’s something totally different. Free will is a big thing in the Dresdenverse, and prophecy badly circumscribes free will, unless it’s cryptic nature actually aids free will by providing for a drastically different yet still accurate result.
Basically anyone seeking to rely upon prophecy in the Dresdenverse is screwed, it does not mean what you think it means, especially concerning Harry.
Corb thinks death is the worst that can happen, he really needs to meet the ghost of Lloyd Slate. Death can be a blessed relief around Mab.