I'm late to this fascinating report by @DemCorps - but it remains urgent reporting about the post-Trump GOP. It describes a bitterly divided party: 70% still in thrall to Trump, 30% against him https://democracycorps.com/republican-party-project/what-will-trump-loyalists-sensed-powerlessness-mean-for-politics/
Trump's defeat has left his supporters aimless, powerless, pessimistic, and alienated from politics. Real-world consequence: by spring 2009, the anti-Obama Tea Party had already come into being. There's no equivalent movement in 2021 to resist Biden.
Racially resentful pro-Trump Republicans find Biden unthreatening - and accordingly are reacting to Biden's recovery plans with interest and "what's in it for me?" curiosity rather than the fierce rejection with which they met Obama plans in 2009.
Most significantly: Trump's self-pitying message - "they stole the elections" - teaches his supporters despair, hopelessness, and passivity. Trump's dominant presence within the GOP is perversely creating a more permissive environment for Biden's success.
Anyway, read the report yourself here. https://democracycorps.com/republican-party-project/what-will-trump-loyalists-sensed-powerlessness-mean-for-politics/