Hmm really? well yeah I admit refurbished Mac and their post sales service is no different than new one. But not all of them refurbished because it has some parts replaced? How about defects which have no effect to performance?
How about this case:
Yellow tinted display, a few dead pixels, dented or deformed chassis/glass are surely defects, but not prevent that Mac to boot and perform "normally" the original owner didn't like it and returned them .. Will Apple still replace those? Or just doing standard inspection, keep it back on their inventory, label them as "refurbished" and sell it back to customer for a few hundred bucks discount?
Or how about a Mac that has been okay, but returned or refunded by previous owner for whatever reason due to Apple's refund policy? Surely it's new .. but still it has been preowned and pre opened Mac.
Now about higher risk on refurbished Mac:
Being shipped more often and further than brand new Mac (due to return, pre opened/used, sometimes have parts being replaced/repaired/reassembled, and shipped to you again as refurbished. Isn't that enough to say they have "higher risk" than vanilla new Macs (which only assembled once, no parts replaced, efficiently shipped to you, never been touched outside factory)??
Yes you can return refurbished Mac to the store, just as new Macs can .. but surely more pointless efforts and time wasted.
EDIT: Saying refurbished Mac is actually better due to double inspection is not totally right either .. Here is an
example