Forgive the intrusion (and I have no issues with the first half of your post), but surely in most airlines there is a mix of quiet months and busy months given the seasonal nature of the business, are you saying that it's unacceptable to have a mix? Even if you do 100 hours per month every month, FTLs will mean you have a few months off in most countries who have max 900/1,000 hours per year, let alone in some airlines where union agreements mandate less than that.
I don't dispute your safe comment, but how are you more efficient when you fly 50 hours a month? I might understand what you mean, however I can imagine the MBA man snorting when you make that comment. Equally, MBA man would snort when he hears words like "lifestyle" and "prestige" mutating into "safety", one is not the opposite of the other. I would agree mostly with sharksandwich - in some countries like the US currently, pay and safety are the opposite ends of the same spectrum given some pilots are paid so little they have to do other jobs, but for many still well-paid pilot jobs, pay and safety are not in the same ballpark.
I would suspect the line in the sand is not actual hours but the type of hours you are flying, ie; back of the clock / back to back shifts / length of shift or sectors and rest times, all of which makes it infinitely more complicated and easier for MBA man to ignore. Only legislators can cure this ill, MBA man will push the boundaries as far as he can.