People who own premium binoculars are usually the ones who say they aren't concerned with edge sharpness. At this level, people even complain that one or the other alpha binocular has a relatively bad field correction! But it's easy to forget how spoiled one has become. I've been guilty of this myself sometimes.

But, a really badly corrected edge is very distracting. I occasionally look through my old Bushnell Insta-Focus 7x35 or Nikon Travelite 8x25 to recalibrate myself. If the edge looks not only blurred, but there are also excessive 2-d distortion or 3-d bowl-shaped effects present in the field, it can be intolerable, even if the central field is okay.

Skywatching is the acid test, since a burred star looks not like a star at all, while a blurred stump can still appear quite stumplike.

It is hopeless to try to convince someone to like a view that they do not like. There is a range of personal tolerance, but if it looks ugly to you, that's the bottom line, and cheap wide fields are not going to be your thing.
Ron