No, he had unprecedented levels of opposition from the Republican party and managed to pass the most expansive and dramatic pieces of legislation expanding healthcare about the government since the Great Society and The New Deal. That alone was a massive accomplishment. He also got Dodd Frank passed and improved the economy, bringing our country back from one of the largest recessions in history.
Lets be honest with history here. What Bernie's core criticism about Obama is in fact very true.
He had an unprecedented amount of energy and goodwill coming into office. The likes of which we haven't seen in over a generation.
What did he do with that? Pretty much nothing.
He rolled in with a super majority and and all that energy and allowed that to be squandered and his presidency largely diminished in just 2 years. Allowing his last 6 years to largely be on the defensive. As Bernie has rightly pointed out time and again, Obama needed to channel that energy with the bully pulpit and use that momentum to try and keep it going. But he largely let that energy dry up and go away. When the Republicans went the way they did with obstruction and partisanship he should of played hardball. Called them out on their bullshit loud and continuously. Threw campaign style rallies to get out the vote in the midterms instead of trying to keep up the Lincoln "Team of Rivals"/great negotiator character he was too in love with for too long. It was honestly also where Hillary's criticism of inexperience from the primaries truly proved out.
He did some great things in those 2 years. Great things with their own deserved criticism though.
And he has done some great things since. But nothing as major.
Whether Hillary will publicly admit it or not her campaign actions speak for her, she knows Obama took the wrong approach in the face of Republicans and that is why she has designed her platform around the things she has.