Kamala was not insistent that Israel have free reign like Trump was. Kamala said that she wanted a cease fire, and Trump wanted Israel to finish the job. In the context of these two candidates, they are clearly not the same.
Voting third party is not a "fuck you" to anyone. No one who matters gives a shit about a third party vote.
A third party vote is a waste of a vote and no different from abstaining. A third party vote is simply shrugging in the face a fascism. Trump loves it, because it opened the way to his election.