I read tons of books via the kindle app on android. I believe that hyphens DO hinder the reading experience... due to an apparent bug with the kindle app!

I have seen countless times that, if the current page breaks on a hyphen, then the next page seems to begin at the next full sentence, thereby losing information. My normal workaround is to simply change font size temporarily to force a repagination. It is annoying.

So, maybe this is why people have complained? I can't really see any other explanation for caring whether or not an author chose to hyphenate.