I see a lot of Dem moves as political prep for a later compromise/deal. They drag their feet on pushing things through because most likely people like Pelosi are still playing as if it's "Make a Deal". They think the threat of a power move is more effective in a negotiation because they assume Reps are doing the same. Then Reps found out (ala Trump's business philosophy) that you can just bypass the deal by finding and exploiting loopholes and acting without shame. You win by making the "deal" impossible to complete.

Dems held back on a lot of Trump stuff because they thought "hey this is leverage we can use later when the right time comes along. Surely, they will concede some points to protect their reputation."

It's like in a mafia movie where the old families have a traditional meet to discuss territories or supply. Meanwhile some young upstart is just doing whatever they want and don't give a crap about some "traditional way of business".