Feel free to move left, Democrats. Your suburban gains will be gone in a flash. Do they genuinely believe this will play well with upper middle class voters they've been courting? Those are the individuals this would hurt the most with the increased tax burden.
That's really not how political coalitions work. If people never voted against their own interests then places like Westchester County (where I live) would never have voted for Clinton, and West Virginia, being one of the states which would be hurt the most be repealing Obamacare, would never have voted for Trump.