Yes, the wights were being dismantled quite easily.
As for plot developments in episode 6 that were called in last episode’s thread: the death of Thoros was also predicted (in addition to the death of a dragon/gain of a dragon for the Night King).
Someone mentioned the possibility of Cersei being killed next episode. That would be extremely surprising, as it would change the war-on-two-fronts facing Daenerys to a war on one front. (No one who might take Cersei’s place in King’s Landing is as satisfying a villain as Cersei, or as likely to present a real threat to Jon and Daenerys.) IF Cersei were to die next episode, though, I’d certainly have to take back my claim that the show’s overall plot is predictable!