Speaking from a retail point of view..............
People eat bugs in their food ALL THE TIME, and have been for centuries.
Before technology and industrialization........people hoarded food, as much as they could. Not that it wasn't available, but because it was hard to come by, purchase, or pick for themselves. So it was kept in larders, cool closets, basements, food pantries, etc....
But insects and rodents still got into this food. But people either ate around the infested parts, or just didn't care and ate everything there.
Food was food, regardless. Especially during times of government created depressions and recessions and such. Nobody could waste anything.
After industrialization, it became worse, because food production warehouses were being overrun with rodents and insects. Companies could not waste food, as they were cutting out profit margins. So many food products, like grains and vegetables, were repackaged and sold, after attempts of "sifting out" the vermin and insects. But many remained.
Also, before automation, many food production facilities had problems with storing ingrediants without infestations. And open vat production systems were notorious for having insects and vermin fall into them. And again, companies couldn't waste all that food, so it was blended into the food product being made. This is why there are "legal" amounts of "foreign substances" allowed in food production.
Even now, with supposed sterile automated food production and storage systems, the threat isn't just insects and vermin anylonger, it's bacteria as well. Automated machines need constant cleaning and sanitization, which they never get. I've seen huge chunks of mold or rotten food stuck to a part of a machine, falling into the batch after so long of buildup.
In food storage and food production nowadays, you are going to get more than you think you are getting. But thats one of the prices we pay for a society that depends on corporations to feed us.