Anything you upload becomes property...

[Fogy]

I read in the policy that anything that gets uploaded to Graal becomes property of Graal.
While I have not had that much training in the field of legal awareness, I understand that anything you make is copyrighted to you, and in order to give it to Graal, or anyone for that matter, you would need to sign a contract that actually specifies what you are giving away.

So even if internet signatures were legally binding (which as of writing they are not), it would still not be enough to take ownership of someone's property since the policy must actually specify WHICH art pieces it takes ownership.
Otherwise anyone who needs a contract to be signed could just add in the small print that anything that person makes becomes their property, which legally is not a binding contract.

So I just wanted to enquire about this rule, can it be changed to something that is actually a real legally binding contract? Or should it be removed completely?

EDIT: Not an attempt to bash by the way, just a fault I found in the legal policy.