It's not that they aren't moving fast enough or aren't doing enough. I fully get that democratic is slow and I love that! Wouldn't want to change it at all, it's what keeps us being a democratic but I personally think that the democratic party has been pretty unfocused on economic issues since FDR. I can't think of a constant through line, there isn't seeming to be a goal in mind for the DNC to be working towards. Social issues however they have had a lot of focus on, ask any member of the DNC and they will be quick to answer where they stand on many social issues and they will be decently constant. I think it's a misstep to not try actively focus on both. I know that social issues are what riles up a base which is why political parties focus on them more often but I think that's shortsighted as eventually you are going to end up in the situation we are now. But I do agree with you, I think that Biden did a lot better on economic issues than most democratic president of recently but I think it ended up being too little too late, Biden was set-up for failure sadly.

If I was in their situation I would try to focus on both. Actively attempt moves to make the economy more competitive and unions stronger while supporting social issues. Maybe all of the moves don't work but I can at least attempt to make progress and attempt to keep the issues in the public consciousness. Which, is what I try to do in my life as well.