The Democrats have a big problem with “solutions” that either don’t address the problem or create worse problems in doing so. And maybe I’m biased by dealing with the Chicago Machine, but there’s too much corruption as well. And don’t even get me started on the corporatism.
The DNC is pretty left socially on a global scale, which I approve of, but just all over the place in terms of economic policy, and I think that axis is where they get labelled as centrist or even right-leaning globally. Though, yes, Secretary Clinton in 2016 was the most conservative candidate with any real support, partly because she was the most experienced in actual governance.