There was no way of "changing Kamala's mind." If there was, it would have been through exerting pressure before the election. Once she knew that pro-Palestine people would fall in line even when she was 100% pro-Israel, she would have absolutely no reason to change positions, if anything, she'd be more likely to become more pro-Israel, because the pro-Israel voters would be more likely to be swing voters. This is why the ideology of "lesser-evilism" is fundamentally incorrect, and how it led to politics shifting further and further right to the point we're at now.
Please explain exactly what mechanism do you think could've been employed to change her mind. Protests? There were widespread campus protests during the election season, and she still didn't respond to them at all.
And why would she? The left has a proven track record of falling in line behind the lesser evil, no matter how much bluster there might be. Based on that assumption, the politically smart move (if all you care about is winning elections) is to completely ignore all of the left's demands and keep moving further and further right forever. Now, we have something to show that our words are not meaningless, hollow threats. If there is any possibility of stopping the rightward shift through electoralism, this is it.
we’ll probably not have elections again
Obviously we will. Not that it will matter, because the two party system is completely fucked and y'all refuse to do anything about it.