Many shorts here shorted AMZN when she was much lower than here months ago. They got tired of waiting and waiting for a huge drop and got convinced (conned) that AMZN wouldn't drop sharply any time soon. Because they are greedy they thoght that they'd make a few bucks by selling naked puts while waiting for an "imminent? crash.
Not only that they gave up their opportunities to profit from AMZN's fall, they''ll lose money when she falls in the next few days.