Knife wrote:
They could well indeed live for generations without our aide, however a simple case of a dead herd animal upstream of them could wipe out the entire tribe.
I beg your pardon? A dead herd animal as opposed to a dead jungle animal? Last time I checked, streams, creeks and rivers contain various species of fish, some of them would feed on carcasses and eat them completely before there would be any problem.
On the other hand, if a dead carcass thrown into a river would really pose a serious problem, they'd have noticed
something about drinking from rivers, and they would either have a taboo in place ("do not drink from rivers, for it angers the mighty spirits and demons within"), found some cure for that, or would already have died out - their very existence, however, speaks against that. If there was any risk, by now, it should have killed them a long time ago.
Actually following the link in the OP and reading a bit or two, I found something even better:
Survival International says that although this particular group is increasing in number, others in the area are at risk from illegal logging.
(Emphasis mine)
This, IMHO, thoroughly disproves everyone who wants to "save" these savages from their "miserable fate". They seem to do well enough. Looking a little bit further, I found the statement:
"The surrounding area has signs of cultivation by the tribe, who are probably maintaining gardens of manioc, a type of tuber which would form a large part of their staple diet."
In other words, they already have agriculture.