@hunter23 at the same time, the difference between human meat and, say, monkey meat is, chemically speaking, somewhere between insignificant to nonexistent
so, in terms of ethics, it may bring some awkward problems, but if you're a hardcore materialist who doesn't care about any labels the material has attached [this can be very scary at times, mind you, but it's also a pragmatic approach] then it's just a slightly unique meat.
if you really wanna be super 'human rights human rights' though, what you should do is 1: make humans not worth hunting (extreme national power as disincentive)
and then 2: remove the necessity of them hunting you (if you have leeway, just isolate them, otherwise, you may have to kill them/face getting murderenated yourself)
finally, flesh tree does in fact just make fruit; its fruit is just chemically/biologically eerily similar to human meat; while humans have a somewhat heavier connotation, this argument doesn't deviate incredibly from the argument against eating dogs. Most people don't see dogs as human, but that hasn't stopped some from complaining that 'man's best friend' is getting eaten due to desperation. if you reverse the process, then in sufficiently desperate times, there is absolutely no guarantee that humans won't start hunting other humans for meat; after all, there's a long fuckin' history of one group of humans viewing another group as subhuman XD
In this kind of trolley-like problem, there's not much righteousness to talk about, but rather just, what do you value? Who do you value, and how much?