It is interesting that you just except this belief.
Don't you think you could change this with the proper attention?
You could probably teach yourself to have a mid-foot strike, which would make pronation a non-issue.
Since you brought it up...
When I started practicing sword in early 2010 I would very consciously place my weight on the parts of the feet that my school uses. That pair of shoes actually did wear much more evenly than usual, but then I wound up with a bunch of new tightness in my hips which I had to address by relaxing there, and now my present pair of shoes seems to be back to wearing away rapidly on the inside of the sole.