Being pro-democracy means voting for the lesser of 2 evils
The "lesser evil" has ceased to represent progressives, both practically and morally.
On practical grounds, there are problems that have been with us for decades. To name a few examples: corporate bailouts/subsidies, expanding presidential powers, the increasing wealth gap, stagnating wages, environmental destruction, no climate tax, increasing government surveillance, the increasing military industrial complex, no federally mandated maternity leave, universal healthcare, no codification of reproductive rights, the 50 year decline of the middle class, etcetera.) When Democrats are in office, they delay some of the Republican agenda (temporally) but do not address these larger issues. Even when we get a blue majority, there are always a couple of Democrats that impede progress. As these problems have continued for decades, the logical conclusion is that Democrats are either incompetent or complicit.
On moral grounds, Democrats have supported far too many white supremacist / imperialist policies that benefit the wealthy elite. Democrats have voted for "tough on crime" policies that disproportionately affect people of color. (The recent expansion of ICE could have been prevented by Democrats. Yet Chuck Schumer is now calling for ICE reform instead of abolition.) Democrats have supported immoral wars and covert CIA operations in order to further our global hegemony and corporate profits -- at the expense of Latin America, Africa, the Middle-East, and East Asia. The literal genocide of the Palestine people is still funded with US tax dollars. (If you think this is a "trick", then it's because you have no principles to stand on.) Democrats just voted to give Israel billions of dollars to continue the genocide.
There simply is no party to vote for to address these issues. While I don't blame anyone who continues to vote to delay the Republican agenda, the "lesser of two evils" rationale is precisely what led us into a fascist oligarchic police-state.