^ Well not everyone is interested in building, at least you came in asking to build a cpu!
The main reason why i said he should go prebuilt is because he doesn't plan on gaming, and so doesn't need high performance parts like a high quality PSU that is lacking with prebuilts... especially if he has a very low budget, he can't beat those prebuilts.
If it turns out he has a large budget then no doubt i'll recommend building.. but even for pre-built, to say to throw under a bus is quite harsh. Hope you weren't inferring i didn't have his best interest in mind.