[paulmd]

You cannot include a message that requires the formation of a binding contract. This is the old “you can fire someone for no reason but not any reason”, and if the message your product shows is a prompt forcing the user to agree to a binding contract, its not GPL compatible.

I agree that in this case it’s likely not enforceable/binding especially since the GPL specifically allows you to ignore those terms. Hopefully that’s legally binding in your jurisdiction vs the other party.

But it’s a straightforward clickwrap agreement, even if the terms are non-monetary the GPL simply doesn’t allow these at all. Can’t place any stipulations on how the user uses the software.