Explain what "enough time to farm for Thrawn" means please

Well, I bought the packs back in March for each character, because I naively thought Phoenix would turn out to be the new Meta. With that, however, I most likely have enough now to farm all of them (except Sabine) up to 7* by the last day of the event. I just hope it really will last for a week...!

Think about it this way: Everyone who payed, has a good chance to get Thrawn at 7*. F2P have to wait half a year. It's basically the same as with any other character.