Yes, they will enter a Defi contract for the few seconds it takes to send the lightning payment. They will scalp fractions of fractions of a cent, making them wealthier beyond their wildest dreams.

Try harder.

Well, technologically it is possible to transfer almost impossible That doesn't mean they will do it. They will hold it for a few days. At scale, it will add some money to twitter coffers(if they are successful that is)