Their message didn't seem to be "vote blue no matter what." They're saying that you should get directly involved with the party, and very very few people actually do. Support a local candidate's run for office or run yourself. I think there's a lot to criticize about the Democrat party, but ONLY doing that is kinda part of the problem.
The US is a two party system. If the US is salvageable, we have to work to pull the Democratic party back to the left - unless we get major voting reform to move away from first past the post , which is obviously not going to happen under republican rule.
I can look at old code that I wrote and feel good about the growth I've made.
I also can look at old code I wrote, which I need to understand/update, and be really annoyed at my past self.
How annoyed I am is entirely based on what I need to do to the code right now. The fact is, it's way easier to be annoyed at myself than annoyed at other people.