Ok, I accept that you have skin in the game and that you are not stating your points of view as a navel gazer.
I could make the facetious comment that if you were a longhaul pilot, your night hours would be at least double what they are.
I am not trying to prosecute the argument that long term sleep deprivation has no harm. Reduction of night credits has no direct relationship with longevity.
All it means is that a Qf pilot has to work less flying hours to get a set number of credited hours.
Many longhaul pilots regularly push the 30 day 90 day and 365 day stick hourly limits notwithstanding night credits.
If night credits were abolished 900 credited hours would be 900 stick hours (disregarding MDC) and if the credited hour pay rate were to remain the same, it would be a massive productivity give. No effect on longevity.