All we can do is keep choosing the less bad option

That's absolutely not the case. For the Democrats to pull back towards the left, their viability as a choice for left-leaning voters needs to be threatened. It's too late for this election, so vote Dem, but in the medium term it means taking action to support a better third party that actually champions progressive and egalitarian governance and peaceful foreign policy, and also challenging the Democrats with protests and campaigns.

Waiting did not get women the vote. Waiting did not achieve the victories of the Civil Rights movement. Waiting will not stop US proxy genocide in the Middle East.