Obviously the author doesn't understand what he's writing about, because Apple does not have fabs, but what he's trying to say is that Apple designs their own processors, rather than buying them off another company.
It's only a matter of time before they ditch Intel for the MacIntosh, and use their own designs as well. It makes no sense to have different instruction sets on the computers, as it adds more development time, and increases software costs.
On top of that, Intel charges a pretty penny. With the volumes Apple ships, and the fact they already have to design processors for iOS, the Mac will be heading in that direction as quickly as they can move ARM upstream.