Sure. But they won't anyways. It doesn't matter if you think Kamal a Harris is owed the votes if the person can't vote for Jill Stein but there is no reason to think they would vote that way at all.
You can't control other people or expect them to suddenly pick another option if they have one in mind.
I don't get where this idea that all those votes belong to the Democratic party. They could write in or not vote or vote red or other non party... Why is it that everyone focuses in on these votes? Is it a comfort blanket? Because it seems delusional if you step back from it.