When you compare Biden to Trump vs. the effects on the Palestinians, were Trump president again, he would not just help the Israelis exterminate the Palestinians, but encourage them to do so quickly- as he’s already told Bibi to “finish it”. So your dichotomy is more than a bit disingenuous .
This is a proposed political idea. It doesn’t make it true and doesn’t make the statement that are options are reduced unless we all allow it to be true.
If the Republican decide to burn all gay people, one cannot claim to be a democrat because they simply want to gas them all.
We decide where the line is drawn. Ignore the propaganda that tells us we have no control over the process. That apathy is how the window shifts, not because the republicans shift.