The poster did not claim it was a "cure". The way I read it was that if you're gut biome is dysfunctional because you eat too much, that is a factor in the immu

The poster did not claim it was a "cure". The way I read it was that if you're gut biome is dysfunctional because you eat too much, that is a factor in the immune response to SARS-CoV-2. That is actually possible. Resetting your gut biome with a 72 hour fast is known to provide significant health benefits. Clearly the poster is not a medical professional and states that fact. But everything stated is reasonable advice. It's certainly not "quack medicine".