Every moment talking about why Dems can't do something is a moment not spent talking about what they did or what they are doing. The bullshit DC reality show is not very entertaining for most people, even if it's how cable news gets its highest ratings from the weirdos who like that stuff!
It's very trendy to blame powerless activists for bad messaging - can't blame the people in power for anything! - but the Manchin-and-Sinema show steps on any possible good messaging!
