OK, plese note that I am not willing to tolerate anti-oss claims and will continue to correct similar false claims. If you don't like those discussions at all, you should try to avoid false claims and the need for corrections.
If I were RedHat, including a non GPL filesystem into my operating system would make me sweat a bit. Intel were facing a similar issue bundling OpenZFS with Lustre in their Intel Enterprise Edition for Lustre. They seem to have solved it by having the installer download the OpenZFS package during installation time.