Serviceability has nothing to do with reliability, for one.
They're designed to not be serviced by anyone - not customers, not retail staff. So, they have better quality parts that reduce return rates, and get replaced by new or refurbished units if they are lemons. Nothing wrong with the advances of mass production.
If the machine is as unserviceable as you claim, then the increased reliability is indeed an advantage (or at least a mitigation). I'm not sure I see the irony.
They're designed to not be serviced by anyone - not customers, not retail staff. So, they have better quality parts that reduce return rates, and get replaced by new or refurbished units if they are lemons. Nothing wrong with the advances of mass production.