Two separate issues here wings and imho its wrong to link them. Professional flight crew know the rules and it is grossly unprofessional of anyone to turn up for a duty the worse for (alcohol) wear. Inexcusable.
Separate issue of rostering and crew fatigue. Yes it is happening throughout the industry and it will continue to get worse and worse until either airlines adopt a more sensible (but less accountant friendly) approach to rostering or we have a fatigue induced accident with lots of spectacular TV footage. I know which one I would bet on...regrettably.
Most authorities turn a blind eye or in the case of JAROPS, airlines become almost self policing. Time for some strong leadership but none is forthcoming on my radar horizon.