I actually agree with Perry on this. In the grand scheme of things, cuting out a body and routning some pickup cavities is simple. Granted, doing it well and venturing past flat top bodies may take some practice. When it really comes down to it, if you CAN'T build a neck it is probably safe to say that you cant build a guitar. The thing to remember here is that just because you havent built a neck, that doesnt mean you cant. Drak for instance doesnt make necks for his guitars, but I don't think anyone would accuse him of not being capable of making one if he wanted to.
I still feel that if you want to consider yourself a guitar builder, luthier, whatever, you need to be building the whole thing. But again, it is about the fun of it and there is no need getting hung up on things like this.