IANAL, but it seems pretty clear to me that if I say "If you exercise your rights in this license then we will do X, where X is impactful to your business", the

IANAL, but it seems pretty clear to me that if I say "If you exercise your rights in this license then we will do X, where X is impactful to your business", then that is clearly a modification of the license. This bit seems pretty clear cut: >6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein. You are not responsible for enforcing compliance by third parties to this License. I can only assume that RedHat is saying "This part of the system we wrote entirely ourselves, and so while you are bound by the GPL we are not"?