"Cursed" is little silly imo, like @RobbRiddick said above many franchises may feel cursed then.
But ATM I do share some fear how do we recover from this. It was just brutal, and it will definitely stay in heads of the players. It was just like losing SB and we all now what happened to Seahawks or Falcons (to name a few who lost in similar fashion recently).
I just hope that Josh is what we all hope he is and he comes even stronger out of this. I am sure I wouldn't, but we are talking Josh Allen here.