I can acknowledge there is a marginal difference between Biden and Trump. However, by accepting whatever infinitesimally small difference there is and voting for Biden, that is effectively an endorsement of everything Biden has done over the last four years (not just Gaza, but also things like breaking the railroad strike). Do that and not only does the left lose whatever small leverage we have, but it also signals to Biden that yes, go ahead and brutally murder thousands of innocent little kids, the left will eventually fall in line no matter what. This means the next time there’s a genocide (say that Israel decides to completely annex the West Bank and ethnically cleans the Palestinians there) the Democrats will have zero fear of any consequences of being a critical partner to Israel in that genocide.