Unfortunately as much as we bleat, it does seem to be sustainable, for the airline at least. Its been going on for many years now and yet the flights still get flown.
Back in the mid 00s even when oil prices were high, the company was making money hand over fist, the pilots were happy, flights were full and it was the place to come. A few years later and some dubious decisions and we have come 180 degree's. Oil is low, profits are disappearing faster than an ice cream in mid summer, no one is happy and most are looking for alternatives and flights are often half full.
My roster just under 100hrs for Jan, similar for Nov and Dec. It is too much