The human eye has an extremely narrow "sweet spot" and needs to gaze precisely at the object to get the image sharp, so a wide angle instrument with blurred edges should not be too bothersome to use.
But the eyes move between different parts of the image when using binoculars or scopes, so a decent sweet spot makes it easier to align the eye's visual axis with the instruments zone of sharpness.
So I concur with the advantage of a wider angle binocular even if the edges are not perfectly sharp.
And I also claim that this is a matter of real FOV as well as perceived FOV, rather than apparent FOV.
Perceived FOV is, so far, not measurable, but it is easy to demonstrate by collapsing and expanding the eye-cups of any particular binocular.
It is much a matter of how much of the vision the black rim obscures, that is, how wide it is. Perceived FOV is often called "transparency".
Martin, your Meostar is known to have that transparency together with a wide [real] field of view that is quite sharp at the edges, and a great apparent FOV.
I agree about the virtues of the Pentax scope, too, and that the natural behaviour is to center the object of interest in the center of the field.
But more so with binoculars than with scopes, since the latter easier allow an oblique observation angle, being monocular, and rest on a tripod.
