I saw a post on another sub that discussed the recent increase in using insects as a food source. One poster countered that there has never been a civilization that survived with bugs as their main food source.
So is this true? Do we know of any civilizations that counted bugs as a major part of their diet? Or were there some that thrived without having to eat some of the more common…and delicious…sources of protein we are more familiar with?
While there's plenty else to say on the topic, a major source of protein in Mesoamerica was insect-based.
For a prior answer focusing on diets in the Valley of Mexico, /u/400-Rabbits gave an overview in this post
You might want to clarify what you meant by "civilization" as it's such a loaded term (see discussion in the sister sub here.
Anyway, the Korowai people in Papua (and many other there) eat sago grubs as important source of protein. There are plenty of writing on this but from the top off my head is Rupert Stasch's The indexicality of life in Korowai sago grub feasts.