Bernie brought two progressive ideas to the table, as you said. And he got all of the young folks riled up about free college tuition. In marketing, we used to call these kinds of ideas “blue sky flyers.” They sounded fantastic, but they were unlikely to be implemented. Can you imagine any Republican in Congress voting yes on any of Bernie’s ideas? He’d never get any of these things passed through Congress, especially when the majority is conservative. And not all Democrats are liberal. There are many moderate to center Dems in Congress.
This is why I didn’t think Bernie would be successful as President, because his ideas would be met with resistance.
Unlike you, many Bernie supporters were angry and bitter that Hillary won the nomination. They felt “The Bern” right up to election day. In protest, they voted for a third party candidate or for DT. They felt robbed, and they believed that the DNC was corrupt. While Bernie did campaign for Hillary, his voters couldn’t forget him harping on her Wall Street speeches and “militarization,” believing her to be a hawk.
In this way, Hillary lost voters, because of Bernie, because of the loyalty of his followers and their impression of Hillary as a liar and member of the elite upper class.