As long as airfare stays low the traveling public do not care
That's a very sweeping statement
HC,
1) It's the airlines that set the fares, not the public. The passengers aren't going to complain about low fares are they.
2) The majority of the public assume that the airlines abide by the regulations and that the regulators know what they are doing................ Even if they are wrong.
One of the problems of course is how do you measure a persons fatigue level? To say that after for example 10hrs a pilot becomes dangerous due to fatigue, doesn't take into account the individual's metabolism or their state of well being on any particular day, after all if you pick up a bug you may well become fatigued a lot sooner than normal but you may not, in the early stages, feel unwell.