Are you happy for them to get away with not treating animals well and not providing suitable conditions for them to be reared? For the various parts of the supply chain to not take proper precautions?
But the chlorine is present at the time you are using the swimming pool, which is no longer the case when you are using the meat.
But the point is that it hides contamination when the meat is tested, yet lets it reproduce later in some cases, making the meat dangerous.
And there have been problems with that.
Maybe not how much, but it is clear that it is happening, when it has been demonstrated that the bacteria is not all killed off by the chlorine, can go into a suspended animation and so does not show up on testing, but can revive later and reproduces to dangerous levels. Under our/EU systems, there is no chlorine to cause this and so contamination can be properly detected.
SteveW