The original post fails to frame its comments within the context of advertising in general and Apple's advertising campaigns specifically.

Advertising is intended to create the perception of differentiation. The bar for accuracy is pretty low, not quite caveat emptor but very nearly so. Tablets have become a commodity, and Amazon is no more disingenuous than a one would find in a campaign where two brands of mid-sized sedans are compared.

It is certainly no less truthful than claims that a device is "magical," nor more disingenuous than comparisons between "Macs and PC's".

The original post's moral outrage simply is not justified to the degree it purports to be unbiased because it is structured as a point by point refutation. It justifies the thesis (of disingenuousness) rather than concluding it to be the case after thoughtful analysis.