Not really I think this is probably much safer than portfolio of US Treasury bills and even CDs of sustaining a retirement.
The stocks he named all have yields of between 2.8 to 3.8% making them competitive or higher than 10 year treasuries and not much below AAA corporate bonds. The one thing we know for a fact is that bonds coupons have zero chance of increasing over time, inflation or no inflation. In contrast pretty much all of the companies he named have a long sometimes 100+ year history of raising dividends.
I'm quite a bit more confident that people will continue to buy Coke, Pampers, Tide, Johnson baby shampoo, Band-Aids during my lifetime than that Uncle Sam will continue to pay its debts. We are after all only 52 days away from a debt crisis, and the media is talking pretty much exclusively about Wiener's wiener.