I was not trying to brush away the differences for GPL 2 vs 3. My point was just that I don't think a more permissive license on Coreutils would have caused every company to want to steal the code, get everyone using it and force out the GPLed version. But a more restrictive license (say one that infects other binaries on the system) would have meant fewer companies using it and thus fewer distros and everyone else using it.
But for other projects the balance is different and a more permissive license would cause issues. There are some projects that even the GPLv2 or even v3 is too permissive for.