Everything they say there is completely accurate and would be very helpful, and the people with all the power in the DP are against all of it and prefer lecturing & scolding & demonizing their own voters.
One complaint I do have about that article's way of looking at it, though, is that it's all about talk. The more time goes on with current trends going they way they are, the harder the talk gets to believe without the actions matching. The Democrats need to be seen actually trying to
do something positive. Even if it doesn't work, they need to be the party that people see trying, pushing the issues, setting the tone & the conversation topics, making Republicans expose themselves in response. So far, the main economic moves that have happened on their watch have been...
►the deaths of the COVID relief programs that had started under Trump, dumping families that had gotten out of poverty under Trump right back in it under Biden
►the gutting of "Build Back Better" of all the parts that would have actually affected ordinary people at all so the parts that were corporate handouts could more easily pass alone
►a so-called "inflation reduction act" after which inflation has observably continued and the inflated prices have stayed inflated
►avoidance of really doing even the minor student debt relief that was supposed to happen
►price controls on just a few drugs which demonstrate that there could be price controls on all of them but that's not being done
►"agenda acquiescence": sitting around waiting for Republicans to tell them what the subject of the conversation will even be.
100% republicans are much worse for the economy.
That's the short-time-scale way of looking at it, on a resolution of a few years, about the time between elections or between little up & down ripples in various economic graph lines.
Unfortunately for Democrats, what affects voters more is a longer time-scale: decades, and at this point even lifetimes/generations. And on that scale, the graphs keep a pretty steady slope through it all since the early 1970s regardless of the smaller temporary ups & downs, and the two parties fail to separate from each other because it carries on this way while they keep trading places back & forth along the way. They even keep agreeing with each other on "bipartisan yay bipartisanship!" decisions that keep things going this way while counting on being able to keep getting elected by blaming the other party for it all.
When you're talking to people who look back and just see it having been getting worse that whole time, pointing out some particular little part of that always-worsening-all-along trend and telling them it actually got
better worse slower for that moment, and
that was because of you, is... not very productive.