What does Crispy Critters mean in Atomic Heart?

gamepur.com:

Atomic Heart is an action-packed FPS role-playing game by developer Mundfish, with the game’s main combat sequences consisting of shooting and slashing at enemies with improvised weapons. Weapons can be crafted and further upgraded via the game’s crafting and cassette system. The game also features a stealth mode and a variety of quick-time events. Players play as Major Sergey Nechayev, codenamed Agent P-3, a veteran who fought in World War 2. Throughout the course of the game, the phrase ‘Crispy Critters’ is commonly heard by the player, usually uttered by P-3 during high-tension moments in the game. Here is what ‘Crispy Critters’ could mean in Atomic Heart.

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Take a shot every time someone says “Crispy Critters”, and you’ll probably end up drinking yourself dumb. The phrase “Crispy Critters” is used plentifully in the game, though its exact definition is not known. Perhaps it is used as a form of censorship, replacing swear words, especially given the context and circumstances of its usage, as P-3 tends to utter those words during situations of volatile emotions, where stress and tension levels would be running high. “Crispy Critters” does not appear to hold any cultural or societal significance in English or even in Russian, the location the game is based in. P-3 could also be using the phrase as a substitute for words he can no longer recall, given his memory issues.

The phrase could also be a reference to Crispy Critters, a breakfast cereal manufactured in 1963 by Post Cereals. The cereal has a rather catchy song in its commercial, but there does not seem to be anything linking it to the themes or characters in Atomic