The alternative to a democrat win remains a Trump win in which your chance to win a fight against the system is significantly lower.

Nobody in the mainstream gave a shit about the genocide in Palestine until Trump came into power. Nobody gave a shit about the inflated police budget until Trump came into power. Nobody gave a shit about the pursuance of brinksmanship until Trump came into power. Nobody gave a shit about the protests that were shut down under Biden, or the many infrastructural issues or the fracking or the credible accusations of rape or the foreign interventions or all the other stuff.
Not in the mainstream media and not in the popular zeitgeist.

Trump coming into power seems to be a catalyst for mobilising a bunch of amoral dumbass liberals like OP. The conditions to create change are much better now.