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 .
As someone who voted 3rd party in 2016 and regrets it. While you are technically correct, the last 8 years have shown that there is so much more on the line than what I was protesting against with my 3rd party vote. I didn’t like Hillary Clinton’s positions on war. And sure, my vote probably wouldn’t have mattered all that much as I live in a very red state, but every time the Supreme Court does some bullshit, I feel a bit of regret that I didn’t use my vote to support the best candidate who actually had a chance.