Indeed, this is how OAE-1's driver orientation utilizes the input directivity of the outer ear to transform the incoming sound. What I aimed to point out in my article is that, while the frontal frequency response cue might be mimicked, the rest of the cues necessary for localization are not simulated (because passive headphones cannot do this) and thus the brain is likely to get confused—as it does with most headphones—and just perceive the frequency response as tonal color, and not as something related to localization.
In my reading of this quoted section above, he describes how the driver orientation shapes the FR, and then points to how a sound source's angle of incidence affects localization. If he meant for these two sentences to be digested completely independently, unfortunately I think people may misinterpret him; they may end up thinking that the latter is describing the effect of the former. It is important to state clearly that the frequency response effect of the headphone's driver orientation will not engender any such localization of the sound source in headphones, and he does in the beginning... but the website says something else.
The marketing copy on the website—which is what most consumers will see—could also be interpreted to be claiming that the frontal orientation of the driver will engender a sense of realistic externalization. Bolded/italicized for clarity below.
The above bolded/italicized claim likely holds weight to people who are interested in purchasing, thus it is worth understanding why this is unlikely (though not impossible) to create the effect that one might assume from the language used.
Great paper! Indeed, it's incredibly important to acknowledge how important the differences between people and rigs are; each having individual anatomy means that possibly huge deviations between listeners and rigs are almost certain to occur.