People loved the preexisting conditions ban, medicaid expansion and regulating what insurance companies had to cover. They hated the tax penalties, the insane bureaucracy, the dumb exchanges that didn't work, and in general the fact that dealing with the kafkaesque nightmare of the medical industry didn't get much better and in fact got worse for people getting bounced from their existing providers.

Let's be real, Obamacare was unpopular not because Obama was black or a democrat but because he tried to do neoliberal "incremental" reform and turned the whole thing into a omnishambles corporate lobbyist clownfucking horror fest.