Phil, maybe those Hadza have evolved over generations to be able to easily digest raw tubers, but I just don't digest them well raw, and I imagine most people don't. Theory is one thing, reality is another.
It's not theory, it's the real world experience of the Hadza. I'm not saying that it necessarily relates to you or any other single individual and your individual experience doesn't dictate what will work for everyone else either. All the example of the Hadza and other peoples and Iguana and other Instinctos that eat raw tubers and legumes says is that the claims I see now and then that no tubers or legumes are edible raw or are not Paleo are bogus assumptions based on ignorance. I don't even fare very well on raw tubers or legumes myself, but I'm not going to claim that they're not Paleo just because of my personal experience. I'm also not advocating anything for anyone else, just sharing information that raises questions about a lot of claims in this forum and elsewhere. As one of my heroes, Socrates, proclaimed, the only thing I know is that I know nothing for certain.
My general mantra is "question everything"--within reason, of course. If someone tells you that all tubers and legumes are inedible unless cooked and totally not Paleo, you now can say, "But what about the //ekwa, groundnuts, etc. that the Hadza and other hunter-gatherers eat, sometimes raw?" The hunter-gatherers, pastoralists and horticulturalists have much to teach us, if we would only open our ears and eyes.
The wording of both categories you mentioned is flawed. Tubers belong in the category of disliked foods that are only eaten because a) they are plentiful and b) avoiding them could possibly lead to famine. Tubers are also in the category of foods that would be eaten in times of famine when less available foods were not so accessible.
As usual you didn't answer my question, which is exactly what I expected, but I'll give it another try. I'm not giving a wording, I'm asking what your wordings are. If you use "starvation foods" to describe the tubers that the Hadza eat regularly as one of their staple food categories, what term would you use for the foods that are less liked by the Hadza than tubers that they would likely only eat when desperate, such as grains, aka grass seeds?