The lesser of two evils, when done over and over again with no discernable pushback, turns into a larger and larger evil over time. They only look substantially different if you have the memory of a worm, or refuse to look at the long-term picture.

Voting is supposed to be a way for the people to exercise their preferences on their government, not some race-to-the-bottom where the party changes but the policy (foreign wars and interventions, neoliberal approach to healthcare and education, funding police, bailing out banks) stays largely the same.

If you believe the political system is beyond critique or opposition, and that citizens have a duty to their officials rather than vice versa, you are already an authoritarian and an opponent of democracy.

What have Biden and Harris done about climate change (besides set aside more oil for drilling)? Women's health (letting Roe v. Wade slip)? The only change in immigrant detention was that they kept whole families together in the camps instead of separating them. And in terms of elections, they made crowned a nominee who won 0 primaries.

Republicans are bad but Democrats are a total red herring. There's no easy way out, because the same forces are acting on each party, with a little bit of kayfabe as distinction.