I wasn't directing the laziness comment specifically at Wil Shipley, I'm sure he isn't. It was more of an aside; a widely generalized comment. Most of us know "indie" devs aren't lazy. It was more to the point that it is easier to complain about what you want than to work with what you've got.

To address your counter point: it is all a mater of implementation, implementation, implementation.

1) I don't think it is unreasonable to say that developers should maintain the features they've already been paid for gratis.

2) It require planing from the get-go within your app, you can't tack this on after the fact. Basic features are covered by the initial purchase of the app. Additional features (AKA what one would want to charge for with a major version upgrade) or perhaps feature "packs" are provided via In-App purchases. New users always start out at the same level, requiring purchases for new features. Features already purchased to be restored via the facilites available in StoreKit.