They explain how in that video. Basically push through the House bill which was the same funding but had guarantees on how the money had to be spent. Then get on the news everyday and talk about how the Republicans and Trump won't pass a bill that gets mattresses, blankets, toothpaste, and soap to children. Instead Pelosi pushes her caucus to pass a Republican bill that has nothing but vague promises from the Trump admin about how the money will be spent.
If the Dems want to lose more elections, voting in Republican bills without even a smidgen of compromise is one way to do it. Why did voters even bother turning out in 2018 if the Dems won't even use the majority they were given?
I agree, but the Senate and particularly Schumer being awful doesn't make Pelosi any better.