At the same time, yes, food diversity and supply is problematic. Because you did enough to fix the strategic level problem, but despite this being a recurring thing in the chats, did not bother doing more of the projects to help supply the people with a more diverse diet. People are getting fed enough. It is not particularly good, but it is enough.
Edit: Remember that this is a setting where you are telling the apocalypse not today. = or even + or ++ is not "enough" let alone plenty. It is "sufficient" It means that your numbers are telling you that people are getting their 2k kcal a day, not whether they like the 2k that they get.