That the overwhelming majority of voters are not just uninformed, uncritical, and apathetic, but actually might be morons? I don't know.
Biden and Harris both have been fairly active in supporting labor and trying to tackle corporate Greed. Harris regularly talked about anti-gouging laws as well as the other items mentioned already. Biden was the most pro-union president we've seen in decades, had a strong NLRB, and was responsible for appointing the most active and effective FTC head we've seen in ages.
There are many many issues with the democratic party, but holy shit, being less supportive of the working class than fucking Republicans is absolutely not one of them.
You mean the wall that had multiple useless sections built with American taxpayers money and he absolutely would have continued with if not for the inherent logistics issues of physical reality and lack of competent enablers that aren't blockers this time around?
Also, the 2016 administrator WAS catastrophic. The hyper consolidation of corporate actors, deregulation and defanging of admin agencies that effectively removed all culpability from corporate actors, and bureaucratic damage that has made recovery a steeple uphill battle all happened not just under his watching but as an explicit intent of his watch.