People have lots of anger about healthcare for many many reasons. I can't tell you how many people I've met who are angry about "Obamacare" but don't realize how it helped them compared to the prior situation. There's also lots of anger at the prices for healthcare that we sometimes see, and that anger gets directed at insurance too, even if it's a hospital or other provider setting the prices. And then there's the anxiety of "will this be covered."
Even without out of pocket costs there's lots of reasons to be angry at insurers.
Even without out of pocket costs there's lots of reasons to be angry at insurers.