I think that's one of the 'absence of evidence isn't evidence of absence', especially since we know that worldwide eating insects was /is common and nutritious.
We don't really have a massive edible insect population here though. Locusts apparently taste of butter
they don't live here.
Ants eggs we know can be eaten, so can various larvae.
Worms ? what evidence would be left ?
Frogs ? snails ? common enough on the continent still.
I think that's a probable yes to eating such things in the past, but mind, there's the whole human thing about somethings being a hard 'no'.
Brits don't eat horses, dogs and donkeys kind of thing.
There are tales of Celtic peoples who didn't eat fish.
I'm allergic to fish, so suppose someone like me came along, and I'm not alone in my allergy, and a whole family group/clan decided that fish were a hard 'no'.....over the generations that whole nutritious food becomes not food.
We just don't know enough to be absolutely definite about what folks did and didn't eat, unless we get analysis of their bones/teeth. That can give very clear clues to what they ate, well some of it anyway.
We can say what was available, what we would, now, consider edible.
I would remind us all that we are the Cooking Ape, we can make pretty much anything edible by cooking it first, even bone breaks down. You can roast the inner bark of trees and grind it for flour.....the list goes on.
M