I also hate how this blames the candidate and not the voting populace. Kamala may not even win as it is, but would almost certainly loose if taking a strong stance on Gaza. Blame the American people and stop playing this whataboutism game.
All that aside, Kamala is the fastest way to ending the genocide. It may not be her current platform, but she's the best shot at getting the US to change its stance.
Yeah, the person above you seems to be ignoring the fact that them breaching their air space for the first time is an escalation, not to mention China has generally been escalating it's rhetoric recently.
It could be argued that China is feeling pressured to escalate (due to external events or US escalating trade/policy stances), but threatening a missile system is more signaling "keep this up and we'll respond".