system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does the NFL claim that "pictures, descriptions, and accounts of the game without the NFL's consent is prohibited" when legally they cannot restrict that?

"This telecast is copyrighted by the NFL for the private use of our audience. Any other use of this telecast or of any pictures, descriptions, or accounts of the game without the NFL's consent, is prohibited."
gpt
It's the same idea as a liability waiver. If you believe that you aren't allowed to take some action, then you are less likely to sue.

Liability waivers may or may not hold up in court, but businesses that use them know that making you believe that you can't sue them is more effective than actually using the waiver in court.

The same is true for the NFL. They may or may not have the power to enforce those rules, but by so boldly forbidding those actions, they make everyone believe that they do have that ability, reducing the pirating of their games.