Again, Palestinians will suffer in any case. A third party miraculously getting 20% of the voters will mean either of the genocide-supporting candidates still gets elected, and that means 4 more years of genocide will happen anyway.
And again, minorities are going through hell because of Trump-elected officials. The hope is that two consecutive Democrat terms will make the situation better, while if Trump wins that basically assures the next 4 years will be even worse than now, and that the following 4 will still have Trump-elected officials making it hard for whoever gets elected to get anything done.
It doesn’t matter how huge the chunk of voters that need a more left-leaning candidate is as long as the ones voting Republican are bigger. It’ll always make more sense to appeal to the latter.