A nutrition figure derived from a recipe is an estimate, and a property that presents it as a laboratory result is making a claim it cannot defend.
The estimate is only as good as the recipe behind it. An item with accurate ingredient quantities produces a usable figure; an item with a rough recipe produces a rough one, and no amount of model quality changes that.
It is genuinely useful for the common guest questions — roughly how heavy is this dish, does it contain dairy — and it is not a substitute for a lab analysis where a jurisdiction requires one.
Because the figure is generated as a draft rather than published automatically, the property decides item by item whether it is confident enough to show it.