As an example, similar to your own Atropa example, iNat have explicitly stated that whether something is edible or poisonous is not something that iNat will determine in it’s taxonomic identifications. If you take peanuts for instance, some people are highly allergic and others not, so it is impossible and irresponsible to attempt to advise or determine such things in this platform
https://forum.inaturalist.org/t/create-a-foragable-or-edible-plants-search-option/6089
The above topic has some of the issues identified and discussed, and Ken-ichi comments from an “official” position. He does raise the notion of crowd sourced annotation, but as you yourself point out, huge personal effort!