Yes. They do in fact find this easy-to-read and straightforward passage challenging, or even impenetrable.

A key problem seems to be that more than half of folks either have functionally no working memory, or for some reason fail to exercise it whatsoever when reading. They can't retain one or two subjects or actions or details about setting in their head while they read on a few more words to see how the passage comes together. As soon as you ask them to hold any amount of context past the end of a sentence, they'll judge your writing "difficult", or in even harsher terms.

The brighter of this set will latch on to Hemingway's preferences as gospel and declare that anything harder to swallow than cotton candy is simply bad. Never mind that most of these folks probably struggle to understand Hemingway, too.

I don't know whether this has always been the case, or it's something that has changed over time. I suspect the latter, and that the rise of radio and especially TV had exactly the effects that critics worried they would, but have no data to back it up. Just a hunch.