[WillPostForFood]

these agreements are barely agreements

They either are contracts with all the requirements of being a contract (agreement, consideration, etc..), or they are nothing.

[consteval]

Not true. Again you can't just put anything you want in a contract and then, if they agree, say "yep that works!"

Courts can, and regularly do, find certain parts of a contract are unreasonable and won't be enforced. Doesn't matter if both parties understood and agreed. Just because something is a contract doesn't mean it's really for real!