I agree with 840. If it were simply a max issue Norwegian would suspend its Irish flights for the winter months and reinstate them next summer when (hopefully) the Max will be flying again. They are clearly unprofitable.
Network wide I assume that most of Norwegian's problems are long haul - certain the low cost model works far better for SH than LH. The new CEO is going on about profitability rather than growth but how many of their LH routes are actually profitable?