The answer is affirmative, signature campaigns paid to casinos actually make you to gamble. There are some instances in which the payment for signature campaign is less than the minimum withdrawal, in that case one will be required to bet with it to aim for the minimum withdrawal to be able to make withdrawal. Apart from this, the temptation to gamble when you have some balance is very high which is why payment of signature campaign into the casino actually make one to gamble more.
There was a case in the forum where the minimum withdrawal was higher than the signature weekly payment, and many people frowned at it. The best option was to wait and receive more than one weekly payment before withdrawal ( if the campaign lasts more than one week).
Back to the topic, it is tempting for gamblers to receive payments in casinos. The temptation is even higher if it is a reputable casino that has many enticing offers. But if the forum is not a source of income, using just signature earnings for gambling is a smart move.