This may be, but the probability is unarguably higher than with Trump. Voting exclusively for candidates you morally agree on only works if enough people have the same morale (in this case i.e. are educated on Israel and so on) and are also not willing to make compromises.

Even if unfortunate, this is currently not the case; and you voting independent has smaller chances of changing that than voting democratic. So you will probably have to accept this situation for the moment and choose the "best actually feasible" strategy— and feasible means having the highest probability to win in real life, not merely trying.

Personally, I’d even argue that it’s unethical to not vote for a candidate like Harris, just because the chances of getting stuff like ranked choice voting or educating voters done (which will then lead to you being able to realistically vote for others) is significantly higher when voting Democrats than… letting Trump win?

Notice that I don’t say you have to agree with anything else she stands for, you’re trying to achieve certain goals/get out of the very unfortunate current situation, and even a low chance of reaching that is infinitely better than none.