Only if the terms that you agreed to are legal and enforcable. The court can freely strike terms from a contract that are either illegal or otherwise unenforcable, or even nullify the contract in its entirety.

Specific to the argument at hand, the proposed fine for promoting misinformation is illegal and unenforcable. For starters, Paypal is not a government entity, it is a private business (specifically, a payment aggregator). Not only does it lack the legal power to issue you a fine for actions it alleges are in breach of policy whatsoever, but it does not even have the standing to sue you for any amount of money unless it is for damages you have inflicted upon it. Such as attempting to use their services to commit fraud.

The only thing Paypal has the right to do with your money is to freeze your Paypal account and the balance within it for a duration permitted to it by policies that are enforcable, OR return that money to you either at the end of that limited duration or when you tell them to give you a check for the balance you have in your account after it is closed.