Ah, but that is false. Only a party Y that has received binaries from X can ask X for the source.
If X distributes GPLed binaries to Y, then X must provide sources to Y.
You don't have to provide sources to someone to whom you didn't distribute binaries. If you distributed binaries to Peter, you do not owe Paul source code.
There has to be someone who buys binaries from Red Hat and gets the source; that someone can redistribute the source.
The issue is some alleged threat that Red Hat may supposedly identify the users who do that, and retaliate against them by disabling the accounts that the use for getting those binaries. One can speculate how; for instance they could identify users who are fetching unusual breadth/scope of RHEL source code packages.