“AUTO-COMPLETION” OF TAX FORMS = TAX SIMPLIFICATION?

This writer contends that having the IRS complete “most people’s” tax returns for them is the one realistic proposal for simplifying the federal income tax.  How does having the government prepare your tax return qualify as simplification?  The argument is that if taxpayers don’t have to actually confront the tax rules, that reduces the complexity experienced by taxpayers, so it’s simpler.  Get it?
I’m not buying it.  That’s like saying that because a 2015 model car requires less maintenance, and has fewer user-replaceable parts than my 1970 Dodge Dart did, then the 2015 car is simpler.  Of course the 2015 car is not simpler.  The 2015 car requires less maintenance and repair than the 1970, but when the 2015 does require maintenance or repair, the maintenance or repair is much costlier.  
Anyway, when the IRS prepares your tax return, and you don’t understand how they arrived at the amount they say you owe, what incentive does that give the IRS?  
We’re from the government, and we’re here to help.  Trust us.