Beware confirmation bias in reviewing exit polls (On hand-waving away income inequality)

I've seen the chart below being shared widely on Twitter as an "Aha!" to prove that the vote wasn't about economic anxiety or a working class revolt. Taken at face value that seems a reasonable response.

But if you peel back the onion, you see the big u-turn for voters making less than $30k who went from nearly +30 for Barack Obama to just over +10 for Hillary Clinton. This income group includes 51% of US workers, so this was a massive hit. So when folks try to tell you this was all about one of the other important factors that contributed to this train wreck, don't fall for that banana in the tailpipe.

(click to enlarge)

Here's a link to the chart's source