Seems like MH's policy will be to issue a refund if you make enough noise on this (I asked CS about this - but never followed up with the refund as I needed the TP and to get to PER and alternate flights could not compete with the RM2200 I paid for J return
FWIW, the overnight on the 737 was not as bad as I feared as I was psyching myself up for a horrible overnight flight! But then again, I used to be able to sleep in Y on overnight flights