was that re-checking by a straight pull off the reel (rod pointed at the scale) or pulling through a bendo - you guys were doing?... Capt Mike made us check our drags every morning on the 2 spring scales ... He knew the drag settings would change through many years of experience.
perhaps last century technology (star drags in particular, reel design and old drag materials) were more susceptible to mechanical drift, heat and the elements
then you got users tweaking the star and losing the sweet spot (that's why I prefer quality lever drag reels I've tested and trust)
I think we are definitely using more drag these days heavy saltwater big tuna game fishing with spectra belt and rail techniques that test knots and hooks to maximum
hard or impossible for me to feel the difference between 20 and 35 lbs of drag pulling it off the reel by hand - let alone what 40 plus pounds of drag feels like setting it by hand
at that point I would value the precision a digital scale (with peak hold) can give me
and bless the genius deckhand who beelines for my preset knob to help me with my drag setting ...