Plus, don't run experiments on your own body.
Rapid inactivation of rotaviruses by exposure to acid buffer or acidic gastric juice: https://pubmed.ncbi.nlm.nih.gov/2999315/
The annihilation of the virus and the absorption of all of the wreckage is what gives humans immunity without actually becoming infected.
Generally speaking, the only viruses that make it past the stomach do so in people who already have an illness or are taking medications that raise stomach pH.
Many "stomach viruses" that are transmitted orally actually infect the body at the pharynx and then make their way down to the intestines where they go wild.
Do you have a source for that claim? "Wreckage" would be sufficiently different from the live virus to not elicit an immune response.
The live polio vaccine infects the person with an attenuated virus. The target of the polio virus is intestinal epithelial cells.
There are hundreds of diseases that infect the lower digestive tract (both viral and bacterial) that clearly result from these infectious agents passing through the stomach unaltered.
It may be true that many viruses are destroyed by stomach acid, but you only need a few unaltered viruses to make it through.
Studies show that viruses bound to surfaces can survive stomach acid. Viruses can be bound to food or other particles which can protect them from stomach contents.
https://www.sciencedirect.com/science/article/pii/S019567012...
"FCV survived in synthetic gastric fluid at pH values as low as 2.5 and in some cases as low as 1.5 for at least 30 min when associated with certain materials."
So how does food poisoning happen?